20980074 has 32 divisors (see below), whose sum is σ = 45069696. Its totient is φ = 6487040.

The previous prime is 20980061. The next prime is 20980081. The reversal of 20980074 is 47008902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5794 + ... + 8690.

It is an arithmetic number, because the mean of its divisors is an integer number (1408428).

Almost surely, 2^20980074 is an apocalyptic number.

20980074 is an abundant number, since it is smaller than the sum of its proper divisors (24089622).

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

20980074 is a wasteful number, since it uses less digits than its factorization.

20980074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20980074 is about 4580.4010741419. The cubic root of 20980074 is about 275.8051291938.

Adding to 20980074 its reverse (47008902), we get a palindrome (67988976).

The spelling of 20980074 in words is "twenty million, nine hundred eighty thousand, seventy-four".