20365790 has 8 divisors (see below), whose sum is σ = 36658440. Its totient is φ = 8146312.

The previous prime is 20365783. The next prime is 20365811. The reversal of 20365790 is 9756302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018280 + ... + 1018299.

It is an arithmetic number, because the mean of its divisors is an integer number (4582305).

Almost surely, 2^20365790 is an apocalyptic number.

20365790 is a deficient number, since it is larger than the sum of its proper divisors (16292650).

20365790 is a wasteful number, since it uses less digits than its factorization.

20365790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036586.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 20365790 is about 4512.8472165585. The cubic root of 20365790 is about 273.0866188756.

The spelling of 20365790 in words is "twenty million, three hundred sixty-five thousand, seven hundred ninety".