23087385 has 12 divisors (see below), whose sum is σ = 40018212. Its totient is φ = 12313248.

The previous prime is 23087381. The next prime is 23087437. The reversal of 23087385 is 58378032.

It can be written as a sum of positive squares in 2 ways, for example, as 9603801 + 13483584 = 3099^2 + 3672^2 .

It is not a de Polignac number, because 23087385 - 2² = 23087381 is a prime.

It is a super-2 number, since 2×23087385² = 1066054692276450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23087381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256482 + ... + 256571.

It is an arithmetic number, because the mean of its divisors is an integer number (3334851).

Almost surely, 2^23087385 is an apocalyptic number.

It is an amenable number.

23087385 is a deficient number, since it is larger than the sum of its proper divisors (16930827).

23087385 is a wasteful number, since it uses less digits than its factorization.

23087385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513064 (or 513061 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 23087385 is about 4804.9334022440. The cubic root of 23087385 is about 284.7464041470.

The spelling of 23087385 in words is "twenty-three million, eighty-seven thousand, three hundred eighty-five".