23210442 has 16 divisors (see below), whose sum is σ = 51578880. Its totient is φ = 7736796.

The previous prime is 23210431. The next prime is 23210459. The reversal of 23210442 is 24401232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214858 + ... + 214965.

It is an arithmetic number, because the mean of its divisors is an integer number (3223680).

Almost surely, 2^23210442 is an apocalyptic number.

23210442 is an abundant number, since it is smaller than the sum of its proper divisors (28368438).

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

23210442 is a wasteful number, since it uses less digits than its factorization.

23210442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429834 (or 429828 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 23210442 is about 4817.7216607023. The cubic root of 23210442 is about 285.2514125005.

Adding to 23210442 its reverse (24401232), we get a palindrome (47611674).

The spelling of 23210442 in words is "twenty-three million, two hundred ten thousand, four hundred forty-two".