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28410816 = 263721139
BaseRepresentation
bin110110001100…
…0001111000000
31222110102022110
41230120033000
524233121231
62452535320
7463326240
oct154301700
958412273
1028410816
1115045515
129621540
135b69845
143ab7b20
152763046
hex1b183c0

28410816 has 56 divisors (see below), whose sum is σ = 85912960. Its totient is φ = 8116992.

The previous prime is 28410769. The next prime is 28410821. The reversal of 28410816 is 61801482.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9226 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (1534160).

Almost surely, 228410816 is an apocalyptic number.

It is an amenable number.

28410816 is an abundant number, since it is smaller than the sum of its proper divisors (57502144).

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

28410816 is a wasteful number, since it uses less digits than its factorization.

28410816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21161 (or 21151 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 28410816 is about 5330.1797343054. The cubic root of 28410816 is about 305.1367871616.

The spelling of 28410816 in words is "twenty-eight million, four hundred ten thousand, eight hundred sixteen".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 168 192 224 336 448 672 1344 21139 42278 63417 84556 126834 147973 169112 253668 295946 338224 443919 507336 591892 676448 887838 1014672 1183784 1352896 1775676 2029344 2367568 3551352 4058688 4735136 7102704 9470272 14205408 28410816