15980355 has 16 divisors (see below), whose sum is σ = 28409760. Its totient is φ = 8522784.

The previous prime is 15980333. The next prime is 15980383. The reversal of 15980355 is 55308951.

It is a happy number.

It is not a de Polignac number, because 15980355 - 2⁶ = 15980291 is a prime.

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, 59052 + ... + 59321.

It is an arithmetic number, because the mean of its divisors is an integer number (1775610).

Almost surely, 2^15980355 is an apocalyptic number.

15980355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15980355 is a deficient number, since it is larger than the sum of its proper divisors (12429405).

15980355 is a wasteful number, since it uses less digits than its factorization.

15980355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118387 (or 118381 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 15980355 is about 3997.5436207751. The cubic root of 15980355 is about 251.8810379545.

The spelling of 15980355 in words is "fifteen million, nine hundred eighty thousand, three hundred fifty-five".