22020890 has 32 divisors (see below), whose sum is σ = 42007680. Its totient is φ = 8293824.

The previous prime is 22020877. The next prime is 22020923. The reversal of 22020890 is 9802022.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 14696 + ... + 16124.

It is an arithmetic number, because the mean of its divisors is an integer number (1312740).

Almost surely, 2^22020890 is an apocalyptic number.

22020890 is a deficient number, since it is larger than the sum of its proper divisors (19986790).

22020890 is a wasteful number, since it uses less digits than its factorization.

22020890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 22020890 is about 4692.6421129253. The cubic root of 22020890 is about 280.2925937993.

The spelling of 22020890 in words is "twenty-two million, twenty thousand, eight hundred ninety".