23220426 has 32 divisors (see below), whose sum is σ = 48365568. Its totient is φ = 7423920.

The previous prime is 23220403. The next prime is 23220437. The reversal of 23220426 is 62402232.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23131 + ... + 24113.

It is an arithmetic number, because the mean of its divisors is an integer number (1511424).

Almost surely, 2^23220426 is an apocalyptic number.

23220426 is an abundant number, since it is smaller than the sum of its proper divisors (25145142).

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

23220426 is a wasteful number, since it uses less digits than its factorization.

23220426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 23220426 is about 4818.7577237292. The cubic root of 23220426 is about 285.2923070520.

Adding to 23220426 its reverse (62402232), we get a palindrome (85622658).

The spelling of 23220426 in words is "twenty-three million, two hundred twenty thousand, four hundred twenty-six".