20874368 has 64 divisors (see below), whose sum is σ = 45110520. Its totient is φ = 9584640.

The previous prime is 20874367. The next prime is 20874379. The reversal of 20874368 is 86347802.

It can be written as a sum of positive squares in 4 ways, for example, as 16581184 + 4293184 = 4072^2 + 2072^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (20874367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115238 + ... + 115418.

Almost surely, 2^20874368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20874368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22555260).

20874368 is an abundant number, since it is smaller than the sum of its proper divisors (24236152).

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

20874368 is a wasteful number, since it uses less digits than its factorization.

20874368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 20874368 is about 4568.8475570980. The cubic root of 20874368 is about 275.3411435710.

The spelling of 20874368 in words is "twenty million, eight hundred seventy-four thousand, three hundred sixty-eight".