20980982 has 8 divisors (see below), whose sum is σ = 34332552. Its totient is φ = 9536800.

The previous prime is 20980957. The next prime is 20980987. The reversal of 20980982 is 28908902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20980987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476819 + ... + 476862.

It is an arithmetic number, because the mean of its divisors is an integer number (4291569).

Almost surely, 2^20980982 is an apocalyptic number.

20980982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20980982 is a deficient number, since it is larger than the sum of its proper divisors (13351570).

20980982 is a wasteful number, since it uses less digits than its factorization.

20980982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953694.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 20980982 is about 4580.5001910272. The cubic root of 20980982 is about 275.8091080080.

The spelling of 20980982 in words is "twenty million, nine hundred eighty thousand, nine hundred eighty-two".