15980116 has 6 divisors (see below), whose sum is σ = 27965210. Its totient is φ = 7990056.

The previous prime is 15980099. The next prime is 15980117. The reversal of 15980116 is 61108951.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 12100 = 3996^2 + 110^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15980117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997511 + ... + 1997518.

Almost surely, 2^15980116 is an apocalyptic number.

It is an amenable number.

15980116 is a deficient number, since it is larger than the sum of its proper divisors (11985094).

15980116 is a wasteful number, since it uses less digits than its factorization.

15980116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3995033 (or 3995031 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 15980116 is about 3997.5137273060. The cubic root of 15980116 is about 251.8797822488.

The spelling of 15980116 in words is "fifteen million, nine hundred eighty thousand, one hundred sixteen".