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13870325 = 52779259
BaseRepresentation
bin110100111010…
…010011110101
3222002200111202
4310322103311
512022322300
61213142245
7225616160
oct64722365
928080452
1013870325
117913a87
12478a985
132b483c1
141bb0ad7
15133ead5
hexd3a4f5

13870325 has 12 divisors (see below), whose sum is σ = 19656480. Its totient is φ = 9510960.

The previous prime is 13870319. The next prime is 13870333. The reversal of 13870325 is 52307831.

It is not a de Polignac number, because 13870325 - 24 = 13870309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39455 + ... + 39804.

It is an arithmetic number, because the mean of its divisors is an integer number (1638040).

Almost surely, 213870325 is an apocalyptic number.

It is an amenable number.

13870325 is a deficient number, since it is larger than the sum of its proper divisors (5786155).

13870325 is an equidigital number, since it uses as much as digits as its factorization.

13870325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79276 (or 79271 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 13870325 is about 3724.2885226577. The cubic root of 13870325 is about 240.2677855916.

The spelling of 13870325 in words is "thirteen million, eight hundred seventy thousand, three hundred twenty-five".

Divisors: 1 5 7 25 35 175 79259 396295 554813 1981475 2774065 13870325