15991948 has 24 divisors (see below), whose sum is σ = 32078592. Its totient is φ = 6833424.

The previous prime is 15991933. The next prime is 15991949. The reversal of 15991948 is 84919951.

It is a junction number, because it is equal to n+sod(n) for n = 15991898 and 15991907.

It is not an unprimeable number, because it can be changed into a prime (15991949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12465 + ... + 13687.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^15991948 is an apocalyptic number.

It is an amenable number.

15991948 is an abundant number, since it is smaller than the sum of its proper divisors (16086644).

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

15991948 is a wasteful number, since it uses less digits than its factorization.

15991948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701 (or 1699 counting only the distinct ones).

The product of its digits is 116640, while the sum is 46.

The square root of 15991948 is about 3998.9933733378. The cubic root of 15991948 is about 251.9419325349.

The spelling of 15991948 in words is "fifteen million, nine hundred ninety-one thousand, nine hundred forty-eight".