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76574420 = 22513311947
BaseRepresentation
bin1001001000001…
…10111011010100
312100002101100122
410210012323110
5124100340140
611333131112
71616605016
oct444067324
9170071318
1076574420
113a25154a
1221789a98
1312b31110
14a2541b6
156ac8ab5
hex4906ed4

76574420 has 48 divisors (see below), whose sum is σ = 173916288. Its totient is φ = 28152960.

The previous prime is 76574401. The next prime is 76574437. The reversal of 76574420 is 2447567.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80387 + ... + 81333.

It is an arithmetic number, because the mean of its divisors is an integer number (3623256).

Almost surely, 276574420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76574420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86958144).

76574420 is an abundant number, since it is smaller than the sum of its proper divisors (97341868).

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

76574420 is a wasteful number, since it uses less digits than its factorization.

76574420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 76574420 is about 8750.6811163475. The cubic root of 76574420 is about 424.6468485004.

The spelling of 76574420 in words is "seventy-six million, five hundred seventy-four thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 311 622 947 1244 1555 1894 3110 3788 4043 4735 6220 8086 9470 12311 16172 18940 20215 24622 40430 49244 61555 80860 123110 246220 294517 589034 1178068 1472585 2945170 3828721 5890340 7657442 15314884 19143605 38287210 76574420