20522680 has 16 divisors (see below), whose sum is σ = 46176120. Its totient is φ = 8209056.

The previous prime is 20522669. The next prime is 20522681. The reversal of 20522680 is 8622502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256494 + ... + 256573.

Almost surely, 2^20522680 is an apocalyptic number.

20522680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20522680 is an abundant number, since it is smaller than the sum of its proper divisors (25653440).

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

20522680 is a wasteful number, since it uses less digits than its factorization.

20522680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513078 (or 513074 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20522680 is about 4530.1964637309. The cubic root of 20522680 is about 273.7860762974.

The spelling of 20522680 in words is "twenty million, five hundred twenty-two thousand, six hundred eighty".