22889620 has 24 divisors (see below), whose sum is σ = 51766344. Its totient is φ = 8451456.

The previous prime is 22889617. The next prime is 22889621. The reversal of 22889620 is 2698822.

It can be written as a sum of positive squares in 4 ways, for example, as 1397124 + 21492496 = 1182^2 + 4636^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22889620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22889621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43759 + ... + 44278.

It is an arithmetic number, because the mean of its divisors is an integer number (2156931).

Almost surely, 2^22889620 is an apocalyptic number.

22889620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22889620 is an abundant number, since it is smaller than the sum of its proper divisors (28876724).

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

22889620 is a wasteful number, since it uses less digits than its factorization.

22889620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88059 (or 88057 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 22889620 is about 4784.3097725795. The cubic root of 22889620 is about 283.9310319865.

The spelling of 22889620 in words is "twenty-two million, eight hundred eighty-nine thousand, six hundred twenty".