20768874 has 16 divisors (see below), whose sum is σ = 47471808. Its totient is φ = 5933952.

The previous prime is 20768873. The next prime is 20768887. The reversal of 20768874 is 47886702.

It is a super-2 number, since 2×20768874² = 862692254455752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 494497 = 20768874 / (2 + 0 + 7 + 6 + 8 + 8 + 7 + 4).

It is not an unprimeable number, because it can be changed into a prime (20768873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247207 + ... + 247290.

It is an arithmetic number, because the mean of its divisors is an integer number (2966988).

Almost surely, 2^20768874 is an apocalyptic number.

20768874 is an abundant number, since it is smaller than the sum of its proper divisors (26702934).

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

20768874 is a wasteful number, since it uses less digits than its factorization.

20768874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494509.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 20768874 is about 4557.2880093319. The cubic root of 20768874 is about 274.8765241816.

The spelling of 20768874 in words is "twenty million, seven hundred sixty-eight thousand, eight hundred seventy-four".