22897770 has 32 divisors (see below), whose sum is σ = 62805888. Its totient is φ = 5233728.

The previous prime is 22897757. The next prime is 22897799. The reversal of 22897770 is 7779822.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 15 ways as a sum of consecutive naturals, for example, 54309 + ... + 54728.

It is an arithmetic number, because the mean of its divisors is an integer number (1962684).

Almost surely, 2^22897770 is an apocalyptic number.

22897770 is an abundant number, since it is smaller than the sum of its proper divisors (39908118).

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

22897770 is a wasteful number, since it uses less digits than its factorization.

22897770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109054.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 22897770 is about 4785.1614392829. The cubic root of 22897770 is about 283.9647264926.

The spelling of 22897770 in words is "twenty-two million, eight hundred ninety-seven thousand, seven hundred seventy".