22921030 has 48 divisors (see below), whose sum is σ = 47784240. Its totient is φ = 7888320.

The previous prime is 22921013. The next prime is 22921037. The reversal of 22921030 is 3012922.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 22920989 and 22921007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22921037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22492 + ... + 23488.

It is an arithmetic number, because the mean of its divisors is an integer number (995505).

Almost surely, 2^22921030 is an apocalyptic number.

22921030 is an abundant number, since it is smaller than the sum of its proper divisors (24863210).

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

22921030 is a wasteful number, since it uses less digits than its factorization.

22921030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 22921030 is about 4787.5912523940. The cubic root of 22921030 is about 284.0608462501.

Adding to 22921030 its reverse (3012922), we get a palindrome (25933952).

The spelling of 22921030 in words is "twenty-two million, nine hundred twenty-one thousand, thirty".