20593971 has 12 divisors (see below), whose sum is σ = 29789760. Its totient is φ = 13709520.

The previous prime is 20593949. The next prime is 20593997. The reversal of 20593971 is 17939502.

It is not a de Polignac number, because 20593971 - 2⁶ = 20593907 is a prime.

It is a super-2 number, since 2×20593971² = 848223283097682, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20593921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7765 + ... + 10073.

It is an arithmetic number, because the mean of its divisors is an integer number (2482480).

Almost surely, 2^20593971 is an apocalyptic number.

20593971 is a deficient number, since it is larger than the sum of its proper divisors (9195789).

20593971 is a wasteful number, since it uses less digits than its factorization.

20593971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306 (or 3303 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 20593971 is about 4538.0580648555. The cubic root of 20593971 is about 274.1027328906.

The spelling of 20593971 in words is "twenty million, five hundred ninety-three thousand, nine hundred seventy-one".