131786720 has 96 divisors (see below), whose sum is σ = 355114368. Its totient is φ = 45785088.

The previous prime is 131786693. The next prime is 131786801. The reversal of 131786720 is 27687131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33497 + ... + 37223.

It is an arithmetic number, because the mean of its divisors is an integer number (3699108).

Almost surely, 2^131786720 is an apocalyptic number.

131786720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131786720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177557184).

131786720 is an abundant number, since it is smaller than the sum of its proper divisors (223327648).

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

131786720 is a wasteful number, since it uses less digits than its factorization.

131786720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 131786720 is about 11479.8397201355. The cubic root of 131786720 is about 508.8899604259.

The spelling of 131786720 in words is "one hundred thirty-one million, seven hundred eighty-six thousand, seven hundred twenty".