15215500240 has 40 divisors (see below), whose sum is σ = 35802271008. Its totient is φ = 6012869760.

The previous prime is 15215500229. The next prime is 15215500241. The reversal of 15215500240 is 4200551251.

15215500240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×15215500240² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15215500241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139106 + ... + 1152385.

Almost surely, 2^15215500240 is an apocalyptic number.

15215500240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15215500240 is an abundant number, since it is smaller than the sum of its proper divisors (20586770768).

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

15215500240 is a wasteful number, since it uses less digits than its factorization.

15215500240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291587 (or 2291581 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 15215500240 in words is "fifteen billion, two hundred fifteen million, five hundred thousand, two hundred forty".