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74028680 = 23511168247
BaseRepresentation
bin1000110100110…
…01011010001000
312011022001020222
410122121122020
5122422404210
611202405212
71556143025
oct432313210
9164261228
1074028680
1138872930
1220960808
131244c46b
149b9054c
156774655
hex4699688

74028680 has 32 divisors (see below), whose sum is σ = 181707840. Its totient is φ = 26919360.

The previous prime is 74028679. The next prime is 74028683. The reversal of 74028680 is 8682047.

It is a self number, because there is not a number n which added to its sum of digits gives 74028680.

It is not an unprimeable number, because it can be changed into a prime (74028683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83684 + ... + 84563.

It is an arithmetic number, because the mean of its divisors is an integer number (5678370).

Almost surely, 274028680 is an apocalyptic number.

It is an amenable number.

74028680 is an abundant number, since it is smaller than the sum of its proper divisors (107679160).

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

74028680 is a wasteful number, since it uses less digits than its factorization.

74028680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168269 (or 168265 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 74028680 is about 8603.9920966956. The cubic root of 74028680 is about 419.8878763436.

The spelling of 74028680 in words is "seventy-four million, twenty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 168247 336494 672988 841235 1345976 1682470 1850717 3364940 3701434 6729880 7402868 9253585 14805736 18507170 37014340 74028680