Search a number
-
+
23015072 = 251017121
BaseRepresentation
bin101011111001…
…0111010100000
31121022021202002
41113302322200
521342440242
62141143132
7366424223
oct127627240
947267662
1023015072
1111a9a623
12785aaa8
1349ca8b2
1430b15ba
152049432
hex15f2ea0

23015072 has 24 divisors (see below), whose sum is σ = 45765972. Its totient is φ = 11392000.

The previous prime is 23015029. The next prime is 23015081. The reversal of 23015072 is 27051032.

It can be written as a sum of positive squares in 2 ways, for example, as 23001616 + 13456 = 4796^2 + 116^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 329 + ... + 6792.

Almost surely, 223015072 is an apocalyptic number.

It is an amenable number.

23015072 is a deficient number, since it is larger than the sum of its proper divisors (22750900).

23015072 is a wasteful number, since it uses less digits than its factorization.

23015072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7232 (or 7224 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 23015072 is about 4797.4026305908. The cubic root of 23015072 is about 284.4488043675.

The spelling of 23015072 in words is "twenty-three million, fifteen thousand, seventy-two".

Divisors: 1 2 4 8 16 32 101 202 404 808 1616 3232 7121 14242 28484 56968 113936 227872 719221 1438442 2876884 5753768 11507536 23015072