20860944 has 80 divisors (see below), whose sum is σ = 58787904. Its totient is φ = 6336000.

The previous prime is 20860943. The next prime is 20860949. The reversal of 20860944 is 44906802.

It is a super-2 number, since 2×20860944² = 870357969142272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20860943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62859 + ... + 63189.

Almost surely, 2^20860944 is an apocalyptic number.

20860944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20860944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29393952).

20860944 is an abundant number, since it is smaller than the sum of its proper divisors (37926960).

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

20860944 is a wasteful number, since it uses less digits than its factorization.

20860944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20860944 is about 4567.3782413985. The cubic root of 20860944 is about 275.2821082969.

The spelling of 20860944 in words is "twenty million, eight hundred sixty thousand, nine hundred forty-four".