15131982 has 16 divisors (see below), whose sum is σ = 30305232. Its totient is φ = 5037120.

The previous prime is 15131981. The next prime is 15131983. The reversal of 15131982 is 28913151.

It is an interprime number because it is at equal distance from previous prime (15131981) and next prime (15131983).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15131981) 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, 5178 + ... + 7554.

It is an arithmetic number, because the mean of its divisors is an integer number (1894077).

Almost surely, 2^15131982 is an apocalyptic number.

15131982 is an abundant number, since it is smaller than the sum of its proper divisors (15173250).

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

15131982 is a wasteful number, since it uses less digits than its factorization.

15131982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its digits is 2160, while the sum is 30.

The square root of 15131982 is about 3889.9848328753. The cubic root of 15131982 is about 247.3424198430.

The spelling of 15131982 in words is "fifteen million, one hundred thirty-one thousand, nine hundred eighty-two".