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28675025 = 527914519
BaseRepresentation
bin110110101100…
…0101111010001
31222221211201222
41231120233101
524320100100
62502334425
7465506441
oct155305721
958854658
1028675025
1115205a75
12972a415
135c2cb92
143b46121
1527b6485
hex1b58bd1

28675025 has 12 divisors (see below), whose sum is σ = 36009600. Its totient is φ = 22648080.

The previous prime is 28675019. The next prime is 28675027. The reversal of 28675025 is 52057682.

It is not a de Polignac number, because 28675025 - 28 = 28674769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28675027) 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, 5285 + ... + 9234.

It is an arithmetic number, because the mean of its divisors is an integer number (3000800).

Almost surely, 228675025 is an apocalyptic number.

28675025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28675025 is a deficient number, since it is larger than the sum of its proper divisors (7334575).

28675025 is a wasteful number, since it uses less digits than its factorization.

28675025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14608 (or 14603 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 28675025 is about 5354.9066285044. The cubic root of 28675025 is about 306.0797526612.

The spelling of 28675025 in words is "twenty-eight million, six hundred seventy-five thousand, twenty-five".

Divisors: 1 5 25 79 395 1975 14519 72595 362975 1147001 5735005 28675025