22145494 has 24 divisors (see below), whose sum is σ = 38953584. Its totient is φ = 9249600.

The previous prime is 22145477. The next prime is 22145503. The reversal of 22145494 is 49454122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23064 + ... + 24004.

It is an arithmetic number, because the mean of its divisors is an integer number (1623066).

Almost surely, 2^22145494 is an apocalyptic number.

22145494 is a deficient number, since it is larger than the sum of its proper divisors (16808090).

22145494 is an equidigital number, since it uses as much as digits as its factorization.

22145494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032 (or 991 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 22145494 is about 4705.8999139378. The cubic root of 22145494 is about 280.8202731958.

The spelling of 22145494 in words is "twenty-two million, one hundred forty-five thousand, four hundred ninety-four".