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28977160472 = 2313231691381
BaseRepresentation
bin11010111111001011…
…000110000100011000
32202210110122021022122
4122333023012010120
5433321123113342
621151213040412
72044036541261
oct327713060430
982713567278
1028977160472
111131a940607
125748486108
13296a4bc200
14158c673968
15b48e354d2
hex6bf2c6118

28977160472 has 48 divisors (see below), whose sum is σ = 60730994880. Its totient is φ = 12942633600.

The previous prime is 28977160453. The next prime is 28977160523. The reversal of 28977160472 is 27406177982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303779 + ... + 387602.

It is an arithmetic number, because the mean of its divisors is an integer number (1265229060).

Almost surely, 228977160472 is an apocalyptic number.

It is an amenable number.

28977160472 is an abundant number, since it is smaller than the sum of its proper divisors (31753834408).

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

28977160472 is a wasteful number, since it uses less digits than its factorization.

28977160472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691444 (or 691427 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 28977160472 in words is "twenty-eight billion, nine hundred seventy-seven million, one hundred sixty thousand, four hundred seventy-two".

Divisors: 1 2 4 8 13 26 31 52 62 104 124 169 248 338 403 676 806 1352 1612 3224 5239 10478 20956 41912 691381 1382762 2765524 5531048 8987953 17975906 21432811 35951812 42865622 71903624 85731244 116843389 171462488 233686778 278626543 467373556 557253086 934747112 1114506172 2229012344 3622145059 7244290118 14488580236 28977160472