20790500 has 48 divisors (see below), whose sum is σ = 46510464. Its totient is φ = 8114400.

The previous prime is 20790467. The next prime is 20790527. The reversal of 20790500 is 509702.

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, 21017 + ... + 21983.

It is an arithmetic number, because the mean of its divisors is an integer number (968968).

Almost surely, 2^20790500 is an apocalyptic number.

20790500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20790500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23255232).

20790500 is an abundant number, since it is smaller than the sum of its proper divisors (25719964).

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

20790500 is a wasteful number, since it uses less digits than its factorization.

20790500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 20790500 is about 4559.6600750495. The cubic root of 20790500 is about 274.9718979548.

The spelling of 20790500 in words is "twenty million, seven hundred ninety thousand, five hundred".