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22934981 = 69133191
BaseRepresentation
bin101011101111…
…1010111000101
31121011012212202
41113133113011
521332404411
62135324245
7365641556
oct127372705
947135782
1022934981
1111a45433
127820685
1349a02c4
14309032d
15203083b
hex15df5c5

22934981 has 4 divisors (see below), whose sum is σ = 22968864. Its totient is φ = 22901100.

The previous prime is 22934959. The next prime is 22934983. The reversal of 22934981 is 18943922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22934981 - 222 = 18740677 is a prime.

It is a super-2 number, since 2×229349812 = 1052026706940722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22934983) 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, 15905 + ... + 17286.

It is an arithmetic number, because the mean of its divisors is an integer number (5742216).

Almost surely, 222934981 is an apocalyptic number.

It is an amenable number.

22934981 is a deficient number, since it is larger than the sum of its proper divisors (33883).

22934981 is an equidigital number, since it uses as much as digits as its factorization.

22934981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33882.

The product of its digits is 31104, while the sum is 38.

The square root of 22934981 is about 4789.0480264871. The cubic root of 22934981 is about 284.1184662482.

The spelling of 22934981 in words is "twenty-two million, nine hundred thirty-four thousand, nine hundred eighty-one".

Divisors: 1 691 33191 22934981