19698980 has 36 divisors (see below), whose sum is σ = 48124188. Its totient is φ = 6753600.

The previous prime is 19698967. The next prime is 19698997. The reversal of 19698980 is 8989691.

It can be written as a sum of positive squares in 2 ways, for example, as 6853924 + 12845056 = 2618^2 + 3584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9071 + ... + 11030.

It is an arithmetic number, because the mean of its divisors is an integer number (1336783).

Almost surely, 2^19698980 is an apocalyptic number.

19698980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19698980 is an abundant number, since it is smaller than the sum of its proper divisors (28425208).

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

19698980 is a wasteful number, since it uses less digits than its factorization.

19698980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20124 (or 20115 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 19698980 is about 4438.3532982402. The cubic root of 19698980 is about 270.0730483649.

The spelling of 19698980 in words is "nineteen million, six hundred ninety-eight thousand, nine hundred eighty".