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23056530 = 2357109793
BaseRepresentation
bin101011111110…
…1000010010010
31121101101121120
41113331002102
521400302110
62142103110
7366656130
oct127750222
947341546
1023056530
1112018792
12787aa96
134a13723
1430c2750
152056870
hex15fd092

23056530 has 32 divisors (see below), whose sum is σ = 63241344. Its totient is φ = 5270016.

The previous prime is 23056507. The next prime is 23056531. The reversal of 23056530 is 3565032.

It is a self number, because there is not a number n which added to its sum of digits gives 23056530.

It is not an unprimeable number, because it can be changed into a prime (23056531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54687 + ... + 55106.

It is an arithmetic number, because the mean of its divisors is an integer number (1976292).

Almost surely, 223056530 is an apocalyptic number.

23056530 is an abundant number, since it is smaller than the sum of its proper divisors (40184814).

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

23056530 is a wasteful number, since it uses less digits than its factorization.

23056530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109810.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 23056530 is about 4801.7215662718. The cubic root of 23056530 is about 284.6194983766.

The spelling of 23056530 in words is "twenty-three million, fifty-six thousand, five hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 109793 219586 329379 548965 658758 768551 1097930 1537102 1646895 2305653 3293790 3842755 4611306 7685510 11528265 23056530