15420456528 has 20 divisors (see below), whose sum is σ = 39836179488. Its totient is φ = 5140152160.

The previous prime is 15420456523. The next prime is 15420456529. The reversal of 15420456528 is 82565402451.

15420456528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15420456528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15420456523) 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 3 ways as a sum of consecutive naturals, for example, 160629708 + ... + 160629803.

Almost surely, 2^15420456528 is an apocalyptic number.

It is an amenable number.

15420456528 is an abundant number, since it is smaller than the sum of its proper divisors (24415722960).

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

15420456528 is a wasteful number, since it uses less digits than its factorization.

15420456528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321259522 (or 321259516 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 42.

Adding to 15420456528 its reverse (82565402451), we get a palindrome (97985858979).

The spelling of 15420456528 in words is "fifteen billion, four hundred twenty million, four hundred fifty-six thousand, five hundred twenty-eight".