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87874080 = 2535726153
BaseRepresentation
bin1010011110011…
…01101000100000
320010100110120120
411033031220200
5134443432310
612415240240
72114626440
oct517155040
9203313516
1087874080
114566a108
1225519080
13152893c8
14b956120
157aabb70
hex53cda20

87874080 has 96 divisors (see below), whose sum is σ = 316358784. Its totient is φ = 20084736.

The previous prime is 87874079. The next prime is 87874081. The reversal of 87874080 is 8047878.

It is an interprime number because it is at equal distance from previous prime (87874079) and next prime (87874081).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87874081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9717 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (3295404).

Almost surely, 287874080 is an apocalyptic number.

87874080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87874080 is an abundant number, since it is smaller than the sum of its proper divisors (228484704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87874080 is a wasteful number, since it uses less digits than its factorization.

87874080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26178 (or 26170 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 87874080 is about 9374.1175584692. The cubic root of 87874080 is about 444.5837626202.

The spelling of 87874080 in words is "eighty-seven million, eight hundred seventy-four thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 80 84 96 105 112 120 140 160 168 210 224 240 280 336 420 480 560 672 840 1120 1680 3360 26153 52306 78459 104612 130765 156918 183071 209224 261530 313836 366142 392295 418448 523060 549213 627672 732284 784590 836896 915355 1046120 1098426 1255344 1464568 1569180 1830710 2092240 2196852 2510688 2746065 2929136 3138360 3661420 4184480 4393704 5492130 5858272 6276720 7322840 8787408 10984260 12553440 14645680 17574816 21968520 29291360 43937040 87874080