20159400 has 48 divisors (see below), whose sum is σ = 62496000. Its totient is φ = 5375680.

The previous prime is 20159383. The next prime is 20159401. The reversal of 20159400 is 495102.

It is not an unprimeable number, because it can be changed into a prime (20159401) 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 11 ways as a sum of consecutive naturals, for example, 16200 + ... + 17399.

It is an arithmetic number, because the mean of its divisors is an integer number (1302000).

Almost surely, 2^20159400 is an apocalyptic number.

20159400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20159400 is an abundant number, since it is smaller than the sum of its proper divisors (42336600).

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

20159400 is a wasteful number, since it uses less digits than its factorization.

20159400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33618 (or 33609 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20159400 is about 4489.9220483211. The cubic root of 20159400 is about 272.1609845748.

The spelling of 20159400 in words is "twenty million, one hundred fifty-nine thousand, four hundred".