20819132 has 12 divisors (see below), whose sum is σ = 36638280. Its totient is φ = 10351056.

The previous prime is 20819119. The next prime is 20819143. The reversal of 20819132 is 23191802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13823 + ... + 15254.

It is an arithmetic number, because the mean of its divisors is an integer number (3053190).

Almost surely, 2^20819132 is an apocalyptic number.

It is an amenable number.

20819132 is a deficient number, since it is larger than the sum of its proper divisors (15819148).

20819132 is a wasteful number, since it uses less digits than its factorization.

20819132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29260 (or 29258 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 20819132 is about 4562.7987025509. The cubic root of 20819132 is about 275.0980675034.

The spelling of 20819132 in words is "twenty million, eight hundred nineteen thousand, one hundred thirty-two".