22404620 has 24 divisors (see below), whose sum is σ = 53771424. Its totient is φ = 7681536.

The previous prime is 22404619. The next prime is 22404631. The reversal of 22404620 is 2640422.

It is a Harshad number since it is a multiple of its sum of digits (20).

22404620 is a modest number, since divided by 4620 gives 2240 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22404592 and 22404601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79877 + ... + 80156.

It is an arithmetic number, because the mean of its divisors is an integer number (2240476).

Almost surely, 2^22404620 is an apocalyptic number.

22404620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22404620 is an abundant number, since it is smaller than the sum of its proper divisors (31366804).

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

22404620 is a wasteful number, since it uses less digits than its factorization.

22404620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160049 (or 160047 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22404620 is about 4733.3518778979. The cubic root of 22404620 is about 281.9113280219.

The spelling of 22404620 in words is "twenty-two million, four hundred four thousand, six hundred twenty".