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28868976 = 2432433463
BaseRepresentation
bin110111000100…
…0000101110000
32000022200210100
41232020011300
524342301401
62510432400
7500245053
oct156100560
960280710
1028868976
1115328764
129802700
135c9a246
143b96a9a
152803b86
hex1b88170

28868976 has 60 divisors (see below), whose sum is σ = 81154528. Its totient is φ = 9580032.

The previous prime is 28868963. The next prime is 28868989. The reversal of 28868976 is 67986882.

It is an interprime number because it is at equal distance from previous prime (28868963) and next prime (28868989).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62121 + ... + 62583.

Almost surely, 228868976 is an apocalyptic number.

It is an amenable number.

28868976 is an abundant number, since it is smaller than the sum of its proper divisors (52285552).

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

28868976 is a wasteful number, since it uses less digits than its factorization.

28868976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 901 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 28868976 is about 5372.9857621252. The cubic root of 28868976 is about 306.7682860037.

The spelling of 28868976 in words is "twenty-eight million, eight hundred sixty-eight thousand, nine hundred seventy-six".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 433 463 866 926 1299 1389 1732 1852 2598 2778 3464 3704 3897 4167 5196 5556 6928 7408 7794 8334 10392 11112 15588 16668 20784 22224 31176 33336 62352 66672 200479 400958 601437 801916 1202874 1603832 1804311 2405748 3207664 3608622 4811496 7217244 9622992 14434488 28868976