20960500 has 96 divisors (see below), whose sum is σ = 51787008. Its totient is φ = 7344000.

The previous prime is 20960497. The next prime is 20960501. The reversal of 20960500 is 506902.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20960501) 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, 203449 + ... + 203551.

It is an arithmetic number, because the mean of its divisors is an integer number (539448).

Almost surely, 2^20960500 is an apocalyptic number.

20960500 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 20960500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25893504).

20960500 is an abundant number, since it is smaller than the sum of its proper divisors (30826508).

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

20960500 is a wasteful number, since it uses less digits than its factorization.

20960500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20960500 is about 4578.2638630817. The cubic root of 20960500 is about 275.7193289022.

The spelling of 20960500 in words is "twenty million, nine hundred sixty thousand, five hundred".