Search a number
-
+
47981056 = 29313023
BaseRepresentation
bin1011011100001…
…0001000000000
310100021200122011
42313002020000
544240343211
64432222304
71121555314
oct267021000
9110250564
1047981056
11250a1972
121409a994
139c2c476
14652db44
15432b921
hex2dc2200

47981056 has 40 divisors (see below), whose sum is σ = 98993664. Its totient is φ = 23208960.

The previous prime is 47981039. The next prime is 47981069. The reversal of 47981056 is 65018974.

It is a super-3 number, since 3×479810563 (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14361 + ... + 17383.

Almost surely, 247981056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47981056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49496832).

47981056 is an abundant number, since it is smaller than the sum of its proper divisors (51012608).

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

47981056 is an equidigital number, since it uses as much as digits as its factorization.

47981056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072 (or 3056 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 47981056 is about 6926.8359299178. The cubic root of 47981056 is about 363.3763018135.

The spelling of 47981056 in words is "forty-seven million, nine hundred eighty-one thousand, fifty-six".

Divisors: 1 2 4 8 16 31 32 62 64 124 128 248 256 496 512 992 1984 3023 3968 6046 7936 12092 15872 24184 48368 93713 96736 187426 193472 374852 386944 749704 773888 1499408 1547776 2998816 5997632 11995264 23990528 47981056