15969798 has 40 divisors (see below), whose sum is σ = 38541888. Its totient is φ = 4913136.

The previous prime is 15969769. The next prime is 15969799. The reversal of 15969798 is 89796951.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15969799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1686 + ... + 5897.

Almost surely, 2^15969798 is an apocalyptic number.

15969798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

15969798 is an abundant number, since it is smaller than the sum of its proper divisors (22572090).

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

15969798 is a wasteful number, since it uses less digits than its factorization.

15969798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7610 (or 7601 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 15969798 is about 3996.2229667525. Note that the first 3 decimals coincide. The cubic root of 15969798 is about 251.8255595481.

The spelling of 15969798 in words is "fifteen million, nine hundred sixty-nine thousand, seven hundred ninety-eight".