15390918240 has 48 divisors (see below), whose sum is σ = 48481393968. Its totient is φ = 4104244736.

The previous prime is 15390918203. The next prime is 15390918259. The reversal of 15390918240 is 4281909351.

15390918240 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 (48).

It is a junction number, because it is equal to n+sod(n) for n = 15390918192 and 15390918201.

It is a congruent number.

It is an unprimeable number.

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, 16031727 + ... + 16032686.

It is an arithmetic number, because the mean of its divisors is an integer number (1010029041).

Almost surely, 2^15390918240 is an apocalyptic number.

15390918240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15390918240 is an abundant number, since it is smaller than the sum of its proper divisors (33090475728).

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

15390918240 is a wasteful number, since it uses less digits than its factorization.

15390918240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32064431 (or 32064423 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 15390918240 in words is "fifteen billion, three hundred ninety million, nine hundred eighteen thousand, two hundred forty".