20828038 has 36 divisors (see below), whose sum is σ = 39933972. Its totient is φ = 8056440.

The previous prime is 20828033. The next prime is 20828053. The reversal of 20828038 is 83082802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20828033) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 149773 + ... + 149911.

It is an arithmetic number, because the mean of its divisors is an integer number (1109277).

Almost surely, 2^20828038 is an apocalyptic number.

20828038 is a deficient number, since it is larger than the sum of its proper divisors (19105934).

20828038 is a wasteful number, since it uses less digits than its factorization.

20828038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 20828038 is about 4563.7745343082. The cubic root of 20828038 is about 275.1372890252.

The spelling of 20828038 in words is "twenty million, eight hundred twenty-eight thousand, thirty-eight".