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28090876 = 22112127457
BaseRepresentation
bin110101100101…
…0000111111100
31221212011102211
41223022013330
524142402001
62442030204
7460524412
oct153120774
957764384
1028090876
1114947100
1294a8364
135a87028
143a332b2
1526ed351
hex1aca1fc

28090876 has 36 divisors (see below), whose sum is σ = 54578944. Its totient is φ = 12640320.

The previous prime is 28090859. The next prime is 28090877. The reversal of 28090876 is 67809082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28090877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61240 + ... + 61696.

Almost surely, 228090876 is an apocalyptic number.

It is an amenable number.

28090876 is a deficient number, since it is larger than the sum of its proper divisors (26488068).

28090876 is a wasteful number, since it uses less digits than its factorization.

28090876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 28090876 is about 5300.0826408651. The cubic root of 28090876 is about 303.9870579670.

The spelling of 28090876 in words is "twenty-eight million, ninety thousand, eight hundred seventy-six".

Divisors: 1 2 4 11 22 44 121 127 242 254 457 484 508 914 1397 1828 2794 5027 5588 10054 15367 20108 30734 55297 58039 61468 110594 116078 221188 232156 638429 1276858 2553716 7022719 14045438 28090876