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23092780 = 2251154639
BaseRepresentation
bin101100000010…
…1111000101100
31121110020100011
41120011320230
521402432110
62142543004
7400166614
oct130057054
947406304
1023092780
1112042a47
127897a64
134a27089
1430d1a44
15206248a
hex1605e2c

23092780 has 12 divisors (see below), whose sum is σ = 48494880. Its totient is φ = 9237104.

The previous prime is 23092757. The next prime is 23092801. The reversal of 23092780 is 8729032.

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 3 ways as a sum of consecutive naturals, for example, 577300 + ... + 577339.

It is an arithmetic number, because the mean of its divisors is an integer number (4041240).

Almost surely, 223092780 is an apocalyptic number.

23092780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23092780 is an abundant number, since it is smaller than the sum of its proper divisors (25402100).

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

23092780 is a wasteful number, since it uses less digits than its factorization.

23092780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154648 (or 1154646 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 23092780 is about 4805.4947716130. The cubic root of 23092780 is about 284.7685820190.

The spelling of 23092780 in words is "twenty-three million, ninety-two thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 1154639 2309278 4618556 5773195 11546390 23092780