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28612024 = 2371926891
BaseRepresentation
bin110110100100…
…1010110111000
31222211122022121
41231021112320
524311041044
62501131024
7465124660
oct155112670
958748277
1028612024
1115172701
1296b9a74
135c0a2bc
143b2b1a0
1527a2984
hex1b495b8

28612024 has 32 divisors (see below), whose sum is σ = 64540800. Its totient is φ = 11616480.

The previous prime is 28612019. The next prime is 28612027. The reversal of 28612024 is 42021682.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28612024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28612027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12382 + ... + 14509.

It is an arithmetic number, because the mean of its divisors is an integer number (2016900).

Almost surely, 228612024 is an apocalyptic number.

It is an amenable number.

28612024 is an abundant number, since it is smaller than the sum of its proper divisors (35928776).

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

28612024 is a wasteful number, since it uses less digits than its factorization.

28612024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26923 (or 26919 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 28612024 is about 5349.0208449771. The cubic root of 28612024 is about 305.8554288809.

The spelling of 28612024 in words is "twenty-eight million, six hundred twelve thousand, twenty-four".

Divisors: 1 2 4 7 8 14 19 28 38 56 76 133 152 266 532 1064 26891 53782 107564 188237 215128 376474 510929 752948 1021858 1505896 2043716 3576503 4087432 7153006 14306012 28612024