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28627130 = 257408959
BaseRepresentation
bin110110100110…
…1000010111010
31222212102001002
41231031002322
524312032010
62501325002
7465220010
oct155150272
958772032
1028627130
1115182a94
129706762
135c1413c
143b328b0
1527a71a5
hex1b4d0ba

28627130 has 16 divisors (see below), whose sum is σ = 58890240. Its totient is φ = 9814992.

The previous prime is 28627127. The next prime is 28627163. The reversal of 28627130 is 3172682.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28627093 and 28627102.

It is an unprimeable number.

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, 204410 + ... + 204549.

It is an arithmetic number, because the mean of its divisors is an integer number (3680640).

Almost surely, 228627130 is an apocalyptic number.

28627130 is an abundant number, since it is smaller than the sum of its proper divisors (30263110).

28627130 is a wasteful number, since it uses less digits than its factorization.

28627130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408973.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 28627130 is about 5350.4326927829. The cubic root of 28627130 is about 305.9092458734.

The spelling of 28627130 in words is "twenty-eight million, six hundred twenty-seven thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 408959 817918 2044795 2862713 4089590 5725426 14313565 28627130