131928540 has 48 divisors (see below), whose sum is σ = 382142880. Its totient is φ = 33967360.

The previous prime is 131928509. The next prime is 131928553. The reversal of 131928540 is 45829131.

It is a congruent number.

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, 36171 + ... + 39650.

It is an arithmetic number, because the mean of its divisors is an integer number (7961310).

Almost surely, 2^131928540 is an apocalyptic number.

131928540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131928540 is an abundant number, since it is smaller than the sum of its proper divisors (250214340).

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

131928540 is a wasteful number, since it uses less digits than its factorization.

131928540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75862 (or 75860 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 131928540 is about 11486.0149747421. The cubic root of 131928540 is about 509.0724393616.

The spelling of 131928540 in words is "one hundred thirty-one million, nine hundred twenty-eight thousand, five hundred forty".