20364984 has 24 divisors (see below), whose sum is σ = 55155360. Its totient is φ = 6788304.

The previous prime is 20364983. The next prime is 20364991. The reversal of 20364984 is 48946302.

It is a happy number.

20364984 is a `hidden beast` number, since 2 + 0 + 3 + 649 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20364983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141352 + ... + 141495.

It is an arithmetic number, because the mean of its divisors is an integer number (2298140).

Almost surely, 2^20364984 is an apocalyptic number.

20364984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20364984 is an abundant number, since it is smaller than the sum of its proper divisors (34790376).

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

20364984 is a wasteful number, since it uses less digits than its factorization.

20364984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282859 (or 282852 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 20364984 is about 4512.7579150670. The cubic root of 20364984 is about 273.0830162537.

The spelling of 20364984 in words is "twenty million, three hundred sixty-four thousand, nine hundred eighty-four".