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22979933 = 157146369
BaseRepresentation
bin101011110101…
…0010101011101
31121020111112122
41113222111131
521340324213
62140312325
7366216614
oct127522535
947214478
1022979933
1111a76189
1278426a5
1349b78c2
1430a287b
15203dd08
hex15ea55d

22979933 has 4 divisors (see below), whose sum is σ = 23126460. Its totient is φ = 22833408.

The previous prime is 22979909. The next prime is 22979939. The reversal of 22979933 is 33997922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4507129 + 18472804 = 2123^2 + 4298^2 .

It is a cyclic number.

It is not a de Polignac number, because 22979933 - 212 = 22975837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22979939) 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, 73028 + ... + 73341.

It is an arithmetic number, because the mean of its divisors is an integer number (5781615).

Almost surely, 222979933 is an apocalyptic number.

It is an amenable number.

22979933 is a deficient number, since it is larger than the sum of its proper divisors (146527).

22979933 is a wasteful number, since it uses less digits than its factorization.

22979933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146526.

The product of its digits is 183708, while the sum is 44.

The square root of 22979933 is about 4793.7389374057. The cubic root of 22979933 is about 284.3039668496.

The spelling of 22979933 in words is "twenty-two million, nine hundred seventy-nine thousand, nine hundred thirty-three".

Divisors: 1 157 146369 22979933