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28842996 = 22371361433
BaseRepresentation
bin110111000000…
…1101111110100
32000021101011010
41232001233310
524340433441
62510112220
7500106240
oct156015764
960241133
1028842996
1115310196
1297ab670
135c8b480
143b8b420
1527eb116
hex1b81bf4

28842996 has 96 divisors (see below), whose sum is σ = 84383488. Its totient is φ = 7464960.

The previous prime is 28842991. The next prime is 28842997. The reversal of 28842996 is 69924882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28842991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66396 + ... + 66828.

Almost surely, 228842996 is an apocalyptic number.

28842996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28842996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42191744).

28842996 is an abundant number, since it is smaller than the sum of its proper divisors (55540492).

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

28842996 is a wasteful number, since it uses less digits than its factorization.

28842996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 519 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 28842996 is about 5370.5675677716. The cubic root of 28842996 is about 306.6762352612.

The spelling of 28842996 in words is "twenty-eight million, eight hundred forty-two thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 7 12 13 14 21 26 28 39 42 52 61 78 84 91 122 156 182 183 244 273 364 366 427 433 546 732 793 854 866 1092 1281 1299 1586 1708 1732 2379 2562 2598 3031 3172 4758 5124 5196 5551 5629 6062 9093 9516 11102 11258 12124 16653 16887 18186 22204 22516 26413 33306 33774 36372 39403 52826 66612 67548 78806 79239 105652 118209 157612 158478 184891 236418 316956 343369 369782 472836 554673 686738 739564 1030107 1109346 1373476 2060214 2218692 2403583 4120428 4807166 7210749 9614332 14421498 28842996