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23027985 = 3253971289
BaseRepresentation
bin101011111011…
…0000100010001
31121022221110100
41113312010101
521343343420
62141323013
7366506661
oct127660421
947287410
1023027985
1111aa92a2
127866469
134a03736
1430b61a1
15204d190
hex15f6111

23027985 has 24 divisors (see below), whose sum is σ = 40046760. Its totient is φ = 12241152.

The previous prime is 23027957. The next prime is 23028007. The reversal of 23027985 is 58972032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6843456 + 16184529 = 2616^2 + 4023^2 .

It is not a de Polignac number, because 23027985 - 28 = 23027729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17221 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (1668615).

Almost surely, 223027985 is an apocalyptic number.

It is an amenable number.

23027985 is a deficient number, since it is larger than the sum of its proper divisors (17018775).

23027985 is a wasteful number, since it uses less digits than its factorization.

23027985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 23027985 is about 4798.7482742899. The cubic root of 23027985 is about 284.5019927111.

The spelling of 23027985 in words is "twenty-three million, twenty-seven thousand, nine hundred eighty-five".

Divisors: 1 3 5 9 15 45 397 1191 1289 1985 3573 3867 5955 6445 11601 17865 19335 58005 511733 1535199 2558665 4605597 7675995 23027985