23010990 has 64 divisors (see below), whose sum is σ = 57784320. Its totient is φ = 5857920.

The previous prime is 23010989. The next prime is 23010997. The reversal of 23010990 is 9901032.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23010990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23010997) 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, 101257 + ... + 101483.

It is an arithmetic number, because the mean of its divisors is an integer number (902880).

Almost surely, 2^23010990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23010990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28892160).

23010990 is an abundant number, since it is smaller than the sum of its proper divisors (34773330).

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

23010990 is a wasteful number, since it uses less digits than its factorization.

23010990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 23010990 is about 4796.9771731790. The cubic root of 23010990 is about 284.4319865669.

The spelling of 23010990 in words is "twenty-three million, ten thousand, nine hundred ninety".