22640455 has 8 divisors (see below), whose sum is σ = 27614304. Its totient is φ = 17815200.

The previous prime is 22640437. The next prime is 22640461. The reversal of 22640455 is 55404622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22640455 - 2⁹ = 22639943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36811 + ... + 37420.

It is an arithmetic number, because the mean of its divisors is an integer number (3451788).

Almost surely, 2^22640455 is an apocalyptic number.

22640455 is a deficient number, since it is larger than the sum of its proper divisors (4973849).

22640455 is an equidigital number, since it uses as much as digits as its factorization.

22640455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74297.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 22640455 is about 4758.1987137992. The cubic root of 22640455 is about 282.8970270523.

The spelling of 22640455 in words is "twenty-two million, six hundred forty thousand, four hundred fifty-five".