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12407828 = 223101957
BaseRepresentation
bin101111010101…
…010000010100
3212100101100012
4233111100110
511134022303
61121535352
7210315266
oct57252024
925311305
1012407828
117005204
1241a4558
132755814
14190db36
1511515d8
hexbd5414

12407828 has 6 divisors (see below), whose sum is σ = 21713706. Its totient is φ = 6203912.

The previous prime is 12407809. The next prime is 12407831. The reversal of 12407828 is 82870421.

It can be written as a sum of positive squares in only one way, i.e., 10252804 + 2155024 = 3202^2 + 1468^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12407794 and 12407803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550975 + ... + 1550982.

It is an arithmetic number, because the mean of its divisors is an integer number (3618951).

Almost surely, 212407828 is an apocalyptic number.

It is an amenable number.

12407828 is a deficient number, since it is larger than the sum of its proper divisors (9305878).

12407828 is a wasteful number, since it uses less digits than its factorization.

12407828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101961 (or 3101959 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 12407828 is about 3522.4746982768. The cubic root of 12407828 is about 231.5076011294.

The spelling of 12407828 in words is "twelve million, four hundred seven thousand, eight hundred twenty-eight".

Divisors: 1 2 4 3101957 6203914 12407828