[go: up one dir, main page]

Search a number
-
+
2691040 = 255112139
BaseRepresentation
bin1010010000111111100000
312001201102011
422100333200
51142103130
6133402304
731605412
oct12207740
95051364
102691040
111578900
12a99394
13732b41
145009b2
1538252a
hex290fe0

2691040 has 72 divisors (see below), whose sum is σ = 7038360. Its totient is φ = 971520.

The previous prime is 2691037. The next prime is 2691041. The reversal of 2691040 is 401962.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19291 + ... + 19429.

It is an arithmetic number, because the mean of its divisors is an integer number (97755).

22691040 is an apocalyptic number.

2691040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2691040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3519180).

2691040 is an abundant number, since it is smaller than the sum of its proper divisors (4347320).

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

2691040 is a wasteful number, since it uses less digits than its factorization.

2691040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2691040 is about 1640.4389656430. The cubic root of 2691040 is about 139.0934623226.

The spelling of 2691040 in words is "two million, six hundred ninety-one thousand, forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 121 139 160 176 220 242 278 352 440 484 556 605 695 880 968 1112 1210 1390 1529 1760 1936 2224 2420 2780 3058 3872 4448 4840 5560 6116 7645 9680 11120 12232 15290 16819 19360 22240 24464 30580 33638 48928 61160 67276 84095 122320 134552 168190 244640 269104 336380 538208 672760 1345520 2691040