20675418 has 16 divisors (see below), whose sum is σ = 41501376. Its totient is φ = 6866720.

The previous prime is 20675399. The next prime is 20675423. The reversal of 20675418 is 81457602.

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, 4446 + ... + 7817.

It is an arithmetic number, because the mean of its divisors is an integer number (2593836).

Almost surely, 2^20675418 is an apocalyptic number.

20675418 is an abundant number, since it is smaller than the sum of its proper divisors (20825958).

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

20675418 is a wasteful number, since it uses less digits than its factorization.

20675418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12549.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 20675418 is about 4547.0229821280. The cubic root of 20675418 is about 274.4636067757.

The spelling of 20675418 in words is "twenty million, six hundred seventy-five thousand, four hundred eighteen".