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47961956 = 2271712927
BaseRepresentation
bin1011011011110…
…1011101100100
310100020201102202
42312331131210
544234240311
64431554032
71121445530
oct266753544
9110221382
1047961956
1125089589
121408b918
139c23873
146526bc0
154325e3b
hex2dbd764

47961956 has 12 divisors (see below), whose sum is σ = 95923968. Its totient is φ = 20555112.

The previous prime is 47961943. The next prime is 47961959. The reversal of 47961956 is 65916974.

47961956 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 47961956.

It is not an unprimeable number, because it can be changed into a prime (47961959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856436 + ... + 856491.

It is an arithmetic number, because the mean of its divisors is an integer number (7993664).

Almost surely, 247961956 is an apocalyptic number.

It is an amenable number.

47961956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

47961956 is a wasteful number, since it uses less digits than its factorization.

47961956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712938 (or 1712936 counting only the distinct ones).

The product of its digits is 408240, while the sum is 47.

The square root of 47961956 is about 6925.4570968276. The cubic root of 47961956 is about 363.3280785556.

The spelling of 47961956 in words is "forty-seven million, nine hundred sixty-one thousand, nine hundred fifty-six".

Divisors: 1 2 4 7 14 28 1712927 3425854 6851708 11990489 23980978 47961956