20597982 has 32 divisors (see below), whose sum is σ = 44128800. Its totient is φ = 6386688.

The previous prime is 20597971. The next prime is 20598001. The reversal of 20597982 is 28979502.

It is a congruent number.

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, 7944 + ... + 10212.

It is an arithmetic number, because the mean of its divisors is an integer number (1379025).

Almost surely, 2^20597982 is an apocalyptic number.

It is a pronic number, being equal to 4538×4539.

20597982 is an abundant number, since it is smaller than the sum of its proper divisors (23530818).

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

20597982 is a wasteful number, since it uses less digits than its factorization.

20597982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 20597982 is about 4538.4999724579. The cubic root of 20597982 is about 274.1205270093.

The spelling of 20597982 in words is "twenty million, five hundred ninety-seven thousand, nine hundred eighty-two".