20592090 has 64 divisors (see below), whose sum is σ = 55987200. Its totient is φ = 5383872.

The previous prime is 20592073. The next prime is 20592097. The reversal of 20592090 is 9029502.

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

It is not an unprimeable number, because it can be changed into a prime (20592097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13591 + ... + 15029.

It is an arithmetic number, because the mean of its divisors is an integer number (874800).

Almost surely, 2^20592090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20592090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27993600).

20592090 is an abundant number, since it is smaller than the sum of its proper divisors (35395110).

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

20592090 is a wasteful number, since it uses less digits than its factorization.

20592090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1502 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 20592090 is about 4537.8508128849. The cubic root of 20592090 is about 274.0943873585.

The spelling of 20592090 in words is "twenty million, five hundred ninety-two thousand, ninety".