20560590 has 24 divisors (see below), whose sum is σ = 53457768. Its totient is φ = 5482800.

The previous prime is 20560583. The next prime is 20560601. The reversal of 20560590 is 9506502.

20560590 is a `hidden beast` number, since 20 + 56 + 0 + 590 = 666.

It is a super-2 number, since 2×20560590² = 845475722296200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114136 + ... + 114315.

It is an arithmetic number, because the mean of its divisors is an integer number (2227407).

Almost surely, 2^20560590 is an apocalyptic number.

20560590 is an abundant number, since it is smaller than the sum of its proper divisors (32897178).

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

20560590 is a wasteful number, since it uses less digits than its factorization.

20560590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228464 (or 228461 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 20560590 is about 4534.3786784961. The cubic root of 20560590 is about 273.9545540625.

The spelling of 20560590 in words is "twenty million, five hundred sixty thousand, five hundred ninety".