13150440 has 48 divisors (see below), whose sum is σ = 42740100. Its totient is φ = 3506688.

The previous prime is 13150399. The next prime is 13150471. The reversal of 13150440 is 4405131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13089924 + 60516 = 3618^2 + 246^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17905 + ... + 18624.

Almost surely, 2^13150440 is an apocalyptic number.

13150440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13150440 is an abundant number, since it is smaller than the sum of its proper divisors (29589660).

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

13150440 is a wasteful number, since it uses less digits than its factorization.

13150440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36546 (or 36539 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13150440 is about 3626.3535404039. The cubic root of 13150440 is about 236.0370046350.

Adding to 13150440 its reverse (4405131), we get a palindrome (17555571).

The spelling of 13150440 in words is "thirteen million, one hundred fifty thousand, four hundred forty".