15204430240 has 96 divisors (see below), whose sum is σ = 36455314896. Its totient is φ = 5991874560.

The previous prime is 15204430217. The next prime is 15204430303. The reversal of 15204430240 is 4203440251.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8989315344 + 6215114896 = 94812^2 + 78836^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3125410 + ... + 3130270.

Almost surely, 2^15204430240 is an apocalyptic number.

15204430240 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 15204430240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18227657448).

15204430240 is an abundant number, since it is smaller than the sum of its proper divisors (21250884656).

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

15204430240 is a wasteful number, since it uses less digits than its factorization.

15204430240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162 (or 5154 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 15204430240 its reverse (4203440251), we get a palindrome (19407870491).

The spelling of 15204430240 in words is "fifteen billion, two hundred four million, four hundred thirty thousand, two hundred forty".