20537682 has 16 divisors (see below), whose sum is σ = 44809632. Its totient is φ = 6223520.

The previous prime is 20537669. The next prime is 20537707. The reversal of 20537682 is 28673502.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155523 + ... + 155654.

It is an arithmetic number, because the mean of its divisors is an integer number (2800602).

Almost surely, 2^20537682 is an apocalyptic number.

20537682 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20537682 is an abundant number, since it is smaller than the sum of its proper divisors (24271950).

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

20537682 is a wasteful number, since it uses less digits than its factorization.

20537682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311193.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20537682 is about 4531.8519393290. The cubic root of 20537682 is about 273.8527722375.

The spelling of 20537682 in words is "twenty million, five hundred thirty-seven thousand, six hundred eighty-two".