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251375342 = 2317195639
BaseRepresentation
bin11101111101110…
…10111011101110
3122112000012010212
432332322323232
51003323002332
640535502422
76141440501
oct1676727356
9575005125
10251375342
11119993019
1270227a12
134010470a
1425557138
15171068b2
hexefbaeee

251375342 has 16 divisors (see below), whose sum is σ = 389836800. Its totient is φ = 121442520.

The previous prime is 251375329. The next prime is 251375347. The reversal of 251375342 is 243573152.

251375342 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 251375299 and 251375308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251375347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41759 + ... + 47397.

It is an arithmetic number, because the mean of its divisors is an integer number (24364800).

Almost surely, 2251375342 is an apocalyptic number.

251375342 is a deficient number, since it is larger than the sum of its proper divisors (138461458).

251375342 is a wasteful number, since it uses less digits than its factorization.

251375342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391.

The product of its digits is 25200, while the sum is 32.

The square root of 251375342 is about 15854.8207810748. The cubic root of 251375342 is about 631.1136278687.

The spelling of 251375342 in words is "two hundred fifty-one million, three hundred seventy-five thousand, three hundred forty-two".

Divisors: 1 2 31 62 719 1438 5639 11278 22289 44578 174809 349618 4054441 8108882 125687671 251375342