22640002 has 32 divisors (see below), whose sum is σ = 42747264. Its totient is φ = 8736000.

The previous prime is 22639987. The next prime is 22640053. The reversal of 22640002 is 20004622.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16752 + ... + 18052.

It is an arithmetic number, because the mean of its divisors is an integer number (1335852).

Almost surely, 2^22640002 is an apocalyptic number.

22640002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22640002 is a deficient number, since it is larger than the sum of its proper divisors (20107262).

22640002 is a wasteful number, since it uses less digits than its factorization.

22640002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22640002 is about 4758.1511115138. The cubic root of 22640002 is about 282.8951402645.

Adding to 22640002 its reverse (20004622), we get a palindrome (42644624).

The spelling of 22640002 in words is "twenty-two million, six hundred forty thousand, two".