15131380 has 48 divisors (see below), whose sum is σ = 35038080. Its totient is φ = 5443200.

The previous prime is 15131357. The next prime is 15131381. The reversal of 15131380 is 8313151.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15131381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23665 + ... + 24295.

It is an arithmetic number, because the mean of its divisors is an integer number (729960).

Almost surely, 2^15131380 is an apocalyptic number.

15131380 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 15131380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17519040).

15131380 is an abundant number, since it is smaller than the sum of its proper divisors (19906700).

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

15131380 is a wasteful number, since it uses less digits than its factorization.

15131380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 15131380 is about 3889.9074539120. The cubic root of 15131380 is about 247.3391397679.

The spelling of 15131380 in words is "fifteen million, one hundred thirty-one thousand, three hundred eighty".