20980330 has 48 divisors (see below), whose sum is σ = 44914176. Its totient is φ = 7032480.

The previous prime is 20980327. The next prime is 20980331. The reversal of 20980330 is 3308902.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20980295 and 20980304.

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 23 ways as a sum of consecutive naturals, for example, 22575 + ... + 23485.

It is an arithmetic number, because the mean of its divisors is an integer number (935712).

Almost surely, 2^20980330 is an apocalyptic number.

20980330 is an abundant number, since it is smaller than the sum of its proper divisors (23933846).

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

20980330 is a wasteful number, since it uses less digits than its factorization.

20980330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20980330 is about 4580.4290192077. The cubic root of 20980330 is about 275.8062509856.

The spelling of 20980330 in words is "twenty million, nine hundred eighty thousand, three hundred thirty".