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56120070 = 2351870669
BaseRepresentation
bin1101011000010…
…1001100000110
310220121012021010
43112011030012
5103331320240
65322503050
71251004236
oct326051406
9126535233
1056120070
1129750926
1216964a86
13b81bc56
14764bcc6
154dd8280
hex3585306

56120070 has 16 divisors (see below), whose sum is σ = 134688240. Its totient is φ = 14965344.

The previous prime is 56120063. The next prime is 56120087. The reversal of 56120070 is 7002165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935305 + ... + 935364.

It is an arithmetic number, because the mean of its divisors is an integer number (8418015).

Almost surely, 256120070 is an apocalyptic number.

56120070 is an abundant number, since it is smaller than the sum of its proper divisors (78568170).

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

56120070 is a wasteful number, since it uses less digits than its factorization.

56120070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870679.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 56120070 is about 7491.3329921984. The cubic root of 56120070 is about 382.8594766563.

It can be divided in two parts, 561200 and 70, that added together give a triangular number (561270 = T1059).

The spelling of 56120070 in words is "fifty-six million, one hundred twenty thousand, seventy".

Divisors: 1 2 3 5 6 10 15 30 1870669 3741338 5612007 9353345 11224014 18706690 28060035 56120070