20594040 has 32 divisors (see below), whose sum is σ = 61782480. Its totient is φ = 5491712.

The previous prime is 20594023. The next prime is 20594053. The reversal of 20594040 is 4049502.

It is a super-2 number, since 2×20594040² = 848228967043200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20594040.

It is a congruent number.

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, 85689 + ... + 85928.

Almost surely, 2^20594040 is an apocalyptic number.

20594040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20594040 is an abundant number, since it is smaller than the sum of its proper divisors (41188440).

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

20594040 is a wasteful number, since it uses less digits than its factorization.

20594040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171631 (or 171627 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20594040 is about 4538.0656672199. The cubic root of 20594040 is about 274.1030390169.

The spelling of 20594040 in words is "twenty million, five hundred ninety-four thousand, forty".