23021642 has 16 divisors (see below), whose sum is σ = 39528000. Its totient is φ = 9850848.

The previous prime is 23021639. The next prime is 23021653. The reversal of 23021642 is 24612032.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14609 + ... + 16107.

It is an arithmetic number, because the mean of its divisors is an integer number (2470500).

Almost surely, 2^23021642 is an apocalyptic number.

23021642 is a deficient number, since it is larger than the sum of its proper divisors (16506358).

23021642 is a wasteful number, since it uses less digits than its factorization.

23021642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 23021642 is about 4798.0873272586. The cubic root of 23021642 is about 284.4758685285.

Adding to 23021642 its reverse (24612032), we get a palindrome (47633674).

The spelling of 23021642 in words is "twenty-three million, twenty-one thousand, six hundred forty-two".