131463728 has 80 divisors (see below), whose sum is σ = 294624000. Its totient is φ = 56259840.

The previous prime is 131463707. The next prime is 131463751. The reversal of 131463728 is 827364131.

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, 219173 + ... + 219771.

It is an arithmetic number, because the mean of its divisors is an integer number (3682800).

Almost surely, 2^131463728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131463728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147312000).

131463728 is an abundant number, since it is smaller than the sum of its proper divisors (163160272).

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

131463728 is a wasteful number, since it uses less digits than its factorization.

131463728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 684 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 131463728 is about 11465.7632977487. The cubic root of 131463728 is about 508.4738794272.

The spelling of 131463728 in words is "one hundred thirty-one million, four hundred sixty-three thousand, seven hundred twenty-eight".