20537080 has 16 divisors (see below), whose sum is σ = 46208520. Its totient is φ = 8214816.

The previous prime is 20537063. The next prime is 20537087. The reversal of 20537080 is 8073502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20537087) 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, 256674 + ... + 256753.

Almost surely, 2^20537080 is an apocalyptic number.

20537080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20537080 is an abundant number, since it is smaller than the sum of its proper divisors (25671440).

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

20537080 is a wasteful number, since it uses less digits than its factorization.

20537080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513438 (or 513434 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20537080 is about 4531.7855200793. The cubic root of 20537080 is about 273.8500964896.

The spelling of 20537080 in words is "twenty million, five hundred thirty-seven thousand, eighty".