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13623870942 = 2321168807429
BaseRepresentation
bin11001011000000101…
…11100010111011110
31022011110201100111200
430230002330113132
5210400202332232
610131514500330
7661416664233
oct145402742736
938143640450
1013623870942
115861357980
1227827346a6
1313917078c6
1493356778a
1554b0d777c
hex32c0bc5de

13623870942 has 24 divisors (see below), whose sum is σ = 32201877240. Its totient is φ = 4128445680.

The previous prime is 13623870893. The next prime is 13623870943. The reversal of 13623870942 is 24907832631.

13623870942 is a `hidden beast` number, since 13 + 623 + 8 + 7 + 0 + 9 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13623870943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34403517 + ... + 34403912.

It is an arithmetic number, because the mean of its divisors is an integer number (1341744885).

Almost surely, 213623870942 is an apocalyptic number.

13623870942 is an abundant number, since it is smaller than the sum of its proper divisors (18578006298).

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

13623870942 is a wasteful number, since it uses less digits than its factorization.

13623870942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68807448 (or 68807445 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 13623870942 in words is "thirteen billion, six hundred twenty-three million, eight hundred seventy thousand, nine hundred forty-two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 68807429 137614858 206422287 412844574 619266861 756881719 1238533722 1513763438 2270645157 4541290314 6811935471 13623870942