15420334432 has 24 divisors (see below), whose sum is σ = 32144595336. Its totient is φ = 7256627712.

The previous prime is 15420334427. The next prime is 15420334493. The reversal of 15420334432 is 23443302451.

It is a happy number.

15420334432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 15420334394 and 15420334403.

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 3 ways as a sum of consecutive naturals, for example, 14172558 + ... + 14173645.

It is an arithmetic number, because the mean of its divisors is an integer number (1339358139).

Almost surely, 2^15420334432 is an apocalyptic number.

It is an amenable number.

15420334432 is an abundant number, since it is smaller than the sum of its proper divisors (16724260904).

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

15420334432 is a wasteful number, since it uses less digits than its factorization.

15420334432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28346230 (or 28346222 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 15420334432 its reverse (23443302451), we get a palindrome (38863636883).

The spelling of 15420334432 in words is "fifteen billion, four hundred twenty million, three hundred thirty-four thousand, four hundred thirty-two".