22905490 has 16 divisors (see below), whose sum is σ = 41617152. Its totient is φ = 9076144.

The previous prime is 22905457. The next prime is 22905499. The reversal of 22905490 is 9450922.

It is a super-2 number, since 2×22905490² = 1049322944280200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22905499) 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, 9634 + ... + 11773.

It is an arithmetic number, because the mean of its divisors is an integer number (2601072).

Almost surely, 2^22905490 is an apocalyptic number.

22905490 is a deficient number, since it is larger than the sum of its proper divisors (18711662).

22905490 is a wasteful number, since it uses less digits than its factorization.

22905490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21521.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 22905490 is about 4785.9680316525. The cubic root of 22905490 is about 283.9966358789.

The spelling of 22905490 in words is "twenty-two million, nine hundred five thousand, four hundred ninety".