20168828 has 24 divisors (see below), whose sum is σ = 36578304. Its totient is φ = 9724400.

The previous prime is 20168821. The next prime is 20168831. The reversal of 20168828 is 82886102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168821) 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, 12593 + ... + 14103.

It is an arithmetic number, because the mean of its divisors is an integer number (1524096).

Almost surely, 2^20168828 is an apocalyptic number.

It is an amenable number.

20168828 is a deficient number, since it is larger than the sum of its proper divisors (16409476).

20168828 is a wasteful number, since it uses less digits than its factorization.

20168828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 20168828 is about 4490.9718324657. The cubic root of 20168828 is about 272.2034053787.

The spelling of 20168828 in words is "twenty million, one hundred sixty-eight thousand, eight hundred twenty-eight".