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86380570 = 25173137443
BaseRepresentation
bin1010010011000…
…01000000011010
320000112120212101
411021201000122
5134103134240
612323234014
72066136253
oct511410032
9200476771
1086380570
114483a001
1224b1890a
1314b85683
14b687b2a
1578b439a
hex526101a

86380570 has 64 divisors (see below), whose sum is σ = 174928896. Its totient is φ = 30551040.

The previous prime is 86380549. The next prime is 86380573. The reversal of 86380570 is 7508368.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (86380573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194769 + ... + 195211.

It is an arithmetic number, because the mean of its divisors is an integer number (2733264).

Almost surely, 286380570 is an apocalyptic number.

86380570 is an abundant number, since it is smaller than the sum of its proper divisors (88548326).

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

86380570 is a wasteful number, since it uses less digits than its factorization.

86380570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 86380570 is about 9294.1148045416. The cubic root of 86380570 is about 442.0506381246.

The spelling of 86380570 in words is "eighty-six million, three hundred eighty thousand, five hundred seventy".

Divisors: 1 2 5 10 17 31 34 37 62 74 85 155 170 185 310 370 443 527 629 886 1054 1147 1258 2215 2294 2635 3145 4430 5270 5735 6290 7531 11470 13733 15062 16391 19499 27466 32782 37655 38998 68665 75310 81955 97495 137330 163910 194990 233461 278647 466922 508121 557294 1016242 1167305 1393235 2334610 2540605 2786470 5081210 8638057 17276114 43190285 86380570