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13900232 = 231737529
BaseRepresentation
bin110101000001…
…100111001000
3222011012112102
4311001213020
512024301412
61213532532
7226102313
oct65014710
928135472
1013900232
1179344a5
1247a4148
132b58bb8
141bbb97a
1513488c2
hexd419c8

13900232 has 8 divisors (see below), whose sum is σ = 26062950. Its totient is φ = 6950112.

The previous prime is 13900231. The next prime is 13900247. The reversal of 13900232 is 23200931.

It can be written as a sum of positive squares in only one way, i.e., 13498276 + 401956 = 3674^2 + 634^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13900231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 868757 + ... + 868772.

Almost surely, 213900232 is an apocalyptic number.

It is an amenable number.

13900232 is a deficient number, since it is larger than the sum of its proper divisors (12162718).

13900232 is a wasteful number, since it uses less digits than its factorization.

13900232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737535 (or 1737531 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 13900232 is about 3728.3014899549. The cubic root of 13900232 is about 240.4403489666.

The spelling of 13900232 in words is "thirteen million, nine hundred thousand, two hundred thirty-two".

Divisors: 1 2 4 8 1737529 3475058 6950116 13900232