15480040 has 32 divisors (see below), whose sum is σ = 35047080. Its totient is φ = 6153472.

The previous prime is 15480029. The next prime is 15480053. The reversal of 15480040 is 4008451.

15480040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15413476 + 66564 = 3926^2 + 258^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15479993 and 15480020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5802 + ... + 8038.

Almost surely, 2^15480040 is an apocalyptic number.

15480040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15480040 is an abundant number, since it is smaller than the sum of its proper divisors (19567040).

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

15480040 is a wasteful number, since it uses less digits than its factorization.

15480040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 15480040 is about 3934.4681978636. The cubic root of 15480040 is about 249.2244767423.

Adding to 15480040 its reverse (4008451), we get a palindrome (19488491).

The spelling of 15480040 in words is "fifteen million, four hundred eighty thousand, forty".