23436990 has 24 divisors (see below), whose sum is σ = 60936408. Its totient is φ = 6249840.

The previous prime is 23436989. The next prime is 23436997. The reversal of 23436990 is 9963432.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23436997) 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, 130116 + ... + 130295.

It is an arithmetic number, because the mean of its divisors is an integer number (2539017).

Almost surely, 2^23436990 is an apocalyptic number.

23436990 is an abundant number, since it is smaller than the sum of its proper divisors (37499418).

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

23436990 is a wasteful number, since it uses less digits than its factorization.

23436990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260424 (or 260421 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 23436990 is about 4841.1765098992. The cubic root of 23436990 is about 286.1764848748.

The spelling of 23436990 in words is "twenty-three million, four hundred thirty-six thousand, nine hundred ninety".