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28672076 = 2223311653
BaseRepresentation
bin110110101100…
…0000001001100
31222221200200202
41231120001030
524320001301
62502313032
7465465026
oct155300114
958850622
1028672076
1115203834
129728778
135c2b734
143b45016
1527b566b
hex1b5804c

28672076 has 12 divisors (see below), whose sum is σ = 52357872. Its totient is φ = 13712688.

The previous prime is 28672073. The next prime is 28672093. The reversal of 28672076 is 67027682.

It is not an unprimeable number, because it can be changed into a prime (28672073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155735 + ... + 155918.

It is an arithmetic number, because the mean of its divisors is an integer number (4363156).

Almost surely, 228672076 is an apocalyptic number.

It is an amenable number.

28672076 is a deficient number, since it is larger than the sum of its proper divisors (23685796).

28672076 is a wasteful number, since it uses less digits than its factorization.

28672076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311680 (or 311678 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 28672076 is about 5354.6312664832. The cubic root of 28672076 is about 306.0692596726.

The spelling of 28672076 in words is "twenty-eight million, six hundred seventy-two thousand, seventy-six".

Divisors: 1 2 4 23 46 92 311653 623306 1246612 7168019 14336038 28672076