131878736 has 40 divisors (see below), whose sum is σ = 280514784. Its totient is φ = 59564160.

The previous prime is 131878723. The next prime is 131878739. The reversal of 131878736 is 637878131.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131878739) 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, 26390 + ... + 30986.

Almost surely, 2^131878736 is an apocalyptic number.

131878736 is a gapful number since it is divisible by the number (16) 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 131878736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140257392).

131878736 is an abundant number, since it is smaller than the sum of its proper divisors (148636048).

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

131878736 is a wasteful number, since it uses less digits than its factorization.

131878736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779 (or 4773 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 131878736 is about 11483.8467422724. The cubic root of 131878736 is about 509.0083717614.

The spelling of 131878736 in words is "one hundred thirty-one million, eight hundred seventy-eight thousand, seven hundred thirty-six".