23985436 has 24 divisors (see below), whose sum is σ = 45979920. Its totient is φ = 10897152.

The previous prime is 23985431. The next prime is 23985439. The reversal of 23985436 is 63458932.

It is a super-2 number, since 2×23985436² = 1150602280220192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23985431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4110 + ... + 8053.

It is an arithmetic number, because the mean of its divisors is an integer number (1915830).

Almost surely, 2^23985436 is an apocalyptic number.

It is an amenable number.

23985436 is a deficient number, since it is larger than the sum of its proper divisors (21994484).

23985436 is a wasteful number, since it uses less digits than its factorization.

23985436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12213 (or 12211 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 23985436 is about 4897.4928279682. The cubic root of 23985436 is about 288.3915552476.

The spelling of 23985436 in words is "twenty-three million, nine hundred eighty-five thousand, four hundred thirty-six".