15242440000 has 70 divisors (see below), whose sum is σ = 37796396594. Its totient is φ = 6096960000.

The previous prime is 15242439983. The next prime is 15242440001. The reversal of 15242440000 is 4424251.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 10814336064 + 4428103936 = 103992^2 + 66544^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15242440001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 150531 + ... + 230530.

Almost surely, 2^15242440000 is an apocalyptic number.

15242440000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15242440000 is an abundant number, since it is smaller than the sum of its proper divisors (22553956594).

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

15242440000 is an frugal number, since it uses more digits than its factorization.

15242440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381093 (or 381068 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 15242440000 its reverse (4424251), we get a palindrome (15246864251).

The spelling of 15242440000 in words is "fifteen billion, two hundred forty-two million, four hundred forty thousand".