23502381 has 32 divisors (see below), whose sum is σ = 38827008. Its totient is φ = 12337920.

The previous prime is 23502379. The next prime is 23502403. The reversal of 23502381 is 18320532.

It is not a de Polignac number, because 23502381 - 2¹ = 23502379 is a prime.

It is a super-2 number, since 2×23502381² = 1104723825338322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23502331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14586 + ... + 16116.

It is an arithmetic number, because the mean of its divisors is an integer number (1213344).

Almost surely, 2^23502381 is an apocalyptic number.

23502381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23502381 is a deficient number, since it is larger than the sum of its proper divisors (15324627).

23502381 is a wasteful number, since it uses less digits than its factorization.

23502381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 23502381 is about 4847.9254325949. The cubic root of 23502381 is about 286.4423891788.

The spelling of 23502381 in words is "twenty-three million, five hundred two thousand, three hundred eighty-one".