20182672 has 20 divisors (see below), whose sum is σ = 41404716. Its totient is φ = 9497600.

The previous prime is 20182667. The next prime is 20182681. The reversal of 20182672 is 27628102.

It can be written as a sum of positive squares in 2 ways, for example, as 8785296 + 11397376 = 2964^2 + 3376^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20182672.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36829 + ... + 37372.

Almost surely, 2^20182672 is an apocalyptic number.

It is an amenable number.

20182672 is an abundant number, since it is smaller than the sum of its proper divisors (21222044).

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

20182672 is a wasteful number, since it uses less digits than its factorization.

20182672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74226 (or 74220 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20182672 is about 4492.5128825636. The cubic root of 20182672 is about 272.2656717972.

The spelling of 20182672 in words is "twenty million, one hundred eighty-two thousand, six hundred seventy-two".