22093640 has 16 divisors (see below), whose sum is σ = 49710780. Its totient is φ = 8837440.

The previous prime is 22093609. The next prime is 22093661. The reversal of 22093640 is 4639022.

It can be written as a sum of positive squares in 2 ways, for example, as 17825284 + 4268356 = 4222^2 + 2066^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 276131 + ... + 276210.

Almost surely, 2^22093640 is an apocalyptic number.

22093640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22093640 is an abundant number, since it is smaller than the sum of its proper divisors (27617140).

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

22093640 is a wasteful number, since it uses less digits than its factorization.

22093640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552352 (or 552348 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 22093640 is about 4700.3872180917. The cubic root of 22093640 is about 280.6009203003.

The spelling of 22093640 in words is "twenty-two million, ninety-three thousand, six hundred forty".