13015380 has 144 divisors (see below), whose sum is σ = 44815680. Its totient is φ = 2806272.

The previous prime is 13015357. The next prime is 13015391. The reversal of 13015380 is 8351031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55744 + ... + 55976.

It is an arithmetic number, because the mean of its divisors is an integer number (311220).

Almost surely, 2^13015380 is an apocalyptic number.

13015380 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 13015380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22407840).

13015380 is an abundant number, since it is smaller than the sum of its proper divisors (31800300).

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

13015380 is a wasteful number, since it uses less digits than its factorization.

13015380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 13015380 is about 3607.6834672682. The cubic root of 13015380 is about 235.2261592220.

The spelling of 13015380 in words is "thirteen million, fifteen thousand, three hundred eighty".