20590730 has 16 divisors (see below), whose sum is σ = 37425024. Its totient is φ = 8155920.

The previous prime is 20590709. The next prime is 20590751. The reversal of 20590730 is 3709502.

It is an interprime number because it is at equal distance from previous prime (20590709) and next prime (20590751).

It is a self number, because there is not a number n which added to its sum of digits gives 20590730.

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, 8966 + ... + 11025.

It is an arithmetic number, because the mean of its divisors is an integer number (2339064).

Almost surely, 2^20590730 is an apocalyptic number.

20590730 is a deficient number, since it is larger than the sum of its proper divisors (16834294).

20590730 is a wasteful number, since it uses less digits than its factorization.

20590730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20101.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 20590730 is about 4537.7009597372. The cubic root of 20590730 is about 274.0883530581.

The spelling of 20590730 in words is "twenty million, five hundred ninety thousand, seven hundred thirty".