20896172 has 24 divisors (see below), whose sum is σ = 40267920. Its totient is φ = 9408960.

The previous prime is 20896171. The next prime is 20896243. The reversal of 20896172 is 27169802.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20896171) 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, 2618 + ... + 6974.

It is an arithmetic number, because the mean of its divisors is an integer number (1677830).

Almost surely, 2^20896172 is an apocalyptic number.

20896172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20896172 is a deficient number, since it is larger than the sum of its proper divisors (19371748).

20896172 is a wasteful number, since it uses less digits than its factorization.

20896172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481 (or 4479 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 20896172 is about 4571.2330940349. The cubic root of 20896172 is about 275.4369779967.

The spelling of 20896172 in words is "twenty million, eight hundred ninety-six thousand, one hundred seventy-two".