20174868 has 54 divisors (see below), whose sum is σ = 59328906. Its totient is φ = 5763744.

The previous prime is 20174857. The next prime is 20174897. The reversal of 20174868 is 86847102.

It can be written as a sum of positive squares in only one way, i.e., 15586704 + 4588164 = 3948^2 + 2142^2 .

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

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 3955 + ... + 7482.

Almost surely, 2^20174868 is an apocalyptic number.

20174868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20174868 is an abundant number, since it is smaller than the sum of its proper divisors (39154038).

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

20174868 is a wasteful number, since it uses less digits than its factorization.

20174868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11461 (or 11449 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 20174868 is about 4491.6442423683. The cubic root of 20174868 is about 272.2305751027.

The spelling of 20174868 in words is "twenty million, one hundred seventy-four thousand, eight hundred sixty-eight".