22920057 has 16 divisors (see below), whose sum is σ = 34874880. Its totient is φ = 14866416.

The previous prime is 22920049. The next prime is 22920077. The reversal of 22920057 is 75002922.

It is a happy number.

It is not a de Polignac number, because 22920057 - 2³ = 22920049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 22920057.

It is not an unprimeable number, because it can be changed into a prime (22920077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10473 + ... + 12470.

It is an arithmetic number, because the mean of its divisors is an integer number (2179680).

Almost surely, 2^22920057 is an apocalyptic number.

22920057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22920057 is a deficient number, since it is larger than the sum of its proper divisors (11954823).

22920057 is a wasteful number, since it uses less digits than its factorization.

22920057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22989 (or 22983 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 22920057 is about 4787.4896344535. The cubic root of 22920057 is about 284.0568267228.

Adding to 22920057 its reverse (75002922), we get a palindrome (97922979).

The spelling of 22920057 in words is "twenty-two million, nine hundred twenty thousand, fifty-seven".