20591948 has 24 divisors (see below), whose sum is σ = 38937360. Its totient is φ = 9472320.

The previous prime is 20591939. The next prime is 20591971. The reversal of 20591948 is 84919502.

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, 23543 + ... + 24401.

It is an arithmetic number, because the mean of its divisors is an integer number (1622390).

Almost surely, 2^20591948 is an apocalyptic number.

It is an amenable number.

20591948 is a deficient number, since it is larger than the sum of its proper divisors (18345412).

20591948 is a wasteful number, since it uses less digits than its factorization.

20591948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 20591948 is about 4537.8351666847. The cubic root of 20591948 is about 274.0937573190.

The spelling of 20591948 in words is "twenty million, five hundred ninety-one thousand, nine hundred forty-eight".