23870385 has 72 divisors (see below), whose sum is σ = 52213824. Its totient is φ = 9800640.

The previous prime is 23870383. The next prime is 23870387. The reversal of 23870385 is 58307832.

It is an interprime number because it is at equal distance from previous prime (23870383) and next prime (23870387).

It is not a de Polignac number, because 23870385 - 2¹ = 23870383 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (23870381) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 287554 + ... + 287636.

It is an arithmetic number, because the mean of its divisors is an integer number (725192).

Almost surely, 2^23870385 is an apocalyptic number.

It is an amenable number.

23870385 is an abundant number, since it is smaller than the sum of its proper divisors (28343439).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23870385 is a wasteful number, since it uses less digits than its factorization.

23870385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 109 counting only the distinct ones).

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

The square root of 23870385 is about 4885.7328007168. The cubic root of 23870385 is about 287.9297065135.

The spelling of 23870385 in words is "twenty-three million, eight hundred seventy thousand, three hundred eighty-five".