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13408656 = 243409683
BaseRepresentation
bin110011001001…
…100110010000
3221020020012220
4303021212100
511413034111
61155221040
7221654202
oct63114620
927206186
1013408656
117629138
1245a7780
132a16221
141ad0772
15129ce06
hexcc9990

13408656 has 40 divisors (see below), whose sum is σ = 34774560. Its totient is φ = 4452096.

The previous prime is 13408639. The next prime is 13408669. The reversal of 13408656 is 65680431.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19291 + ... + 19973.

It is an arithmetic number, because the mean of its divisors is an integer number (869364).

Almost surely, 213408656 is an apocalyptic number.

13408656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13408656 is an abundant number, since it is smaller than the sum of its proper divisors (21365904).

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

13408656 is a wasteful number, since it uses less digits than its factorization.

13408656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 13408656 is about 3661.7831721717. The cubic root of 13408656 is about 237.5719065742.

The spelling of 13408656 in words is "thirteen million, four hundred eight thousand, six hundred fifty-six".

Divisors: 1 2 3 4 6 8 12 16 24 48 409 683 818 1227 1366 1636 2049 2454 2732 3272 4098 4908 5464 6544 8196 9816 10928 16392 19632 32784 279347 558694 838041 1117388 1676082 2234776 3352164 4469552 6704328 13408656