20980338 has 8 divisors (see below), whose sum is σ = 41960688. Its totient is φ = 6993444.

The previous prime is 20980331. The next prime is 20980339. The reversal of 20980338 is 83308902.

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

20980338 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20980299 and 20980308.

It is not an unprimeable number, because it can be changed into a prime (20980331) 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, 1748356 + ... + 1748367.

It is an arithmetic number, because the mean of its divisors is an integer number (5245086).

Almost surely, 2^20980338 is an apocalyptic number.

20980338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20980338 is a wasteful number, since it uses less digits than its factorization.

20980338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496728.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20980338 is about 4580.4298924883. The cubic root of 20980338 is about 275.8062860415.

The spelling of 20980338 in words is "twenty million, nine hundred eighty thousand, three hundred thirty-eight".