20464372 has 12 divisors (see below), whose sum is σ = 37047780. Its totient is φ = 9879296.

The previous prime is 20464363. The next prime is 20464373. The reversal of 20464372 is 27346402.

It can be written as a sum of positive squares in 2 ways, for example, as 6130576 + 14333796 = 2476^2 + 3786^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20464372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20464373) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 88093 + ... + 88324.

It is an arithmetic number, because the mean of its divisors is an integer number (3087315).

Almost surely, 2^20464372 is an apocalyptic number.

It is an amenable number.

20464372 is a deficient number, since it is larger than the sum of its proper divisors (16583408).

20464372 is a wasteful number, since it uses less digits than its factorization.

20464372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176450 (or 176448 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 20464372 is about 4523.7564036981. The cubic root of 20464372 is about 273.5265413005.

The spelling of 20464372 in words is "twenty million, four hundred sixty-four thousand, three hundred seventy-two".