22621090 has 16 divisors (see below), whose sum is σ = 40772160. Its totient is φ = 9036400.

The previous prime is 22621087. The next prime is 22621091. The reversal of 22621090 is 9012622.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22621091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13731 + ... + 15289.

It is an arithmetic number, because the mean of its divisors is an integer number (2548260).

Almost surely, 2^22621090 is an apocalyptic number.

22621090 is a deficient number, since it is larger than the sum of its proper divisors (18151070).

22621090 is a wasteful number, since it uses less digits than its factorization.

22621090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 22621090 is about 4756.1633697761. The cubic root of 22621090 is about 282.8163475256.

It can be divided in two parts, 226 and 21090, that added together give a square (21316 = 146²).

The spelling of 22621090 in words is "twenty-two million, six hundred twenty-one thousand, ninety".