20324790 has 32 divisors (see below), whose sum is σ = 54200160. Its totient is φ = 5419872.

The previous prime is 20324789. The next prime is 20324819. The reversal of 20324790 is 9742302.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 37369 + ... + 37908.

It is an arithmetic number, because the mean of its divisors is an integer number (1693755).

Almost surely, 2^20324790 is an apocalyptic number.

20324790 is an abundant number, since it is smaller than the sum of its proper divisors (33875370).

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

20324790 is a wasteful number, since it uses less digits than its factorization.

20324790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75293 (or 75287 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20324790 is about 4508.3023412367. The cubic root of 20324790 is about 272.9032382596.

The spelling of 20324790 in words is "twenty million, three hundred twenty-four thousand, seven hundred ninety".