22872390 has 32 divisors (see below), whose sum is σ = 57784320. Its totient is φ = 5778144.

The previous prime is 22872379. The next prime is 22872391. The reversal of 22872390 is 9327822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22872391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19494 + ... + 20633.

It is an arithmetic number, because the mean of its divisors is an integer number (1805760).

Almost surely, 2^22872390 is an apocalyptic number.

22872390 is an abundant number, since it is smaller than the sum of its proper divisors (34911930).

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

22872390 is a wasteful number, since it uses less digits than its factorization.

22872390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40156.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 22872390 is about 4782.5087558728. The cubic root of 22872390 is about 283.8597717428.

The spelling of 22872390 in words is "twenty-two million, eight hundred seventy-two thousand, three hundred ninety".