15572428032 has 144 divisors (see below), whose sum is σ = 48374710272. Its totient is φ = 4354529280.

The previous prime is 15572428019. The next prime is 15572428037. The reversal of 15572428032 is 23082427551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15572428037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221857 + ... + 283487.

It is an arithmetic number, because the mean of its divisors is an integer number (335935488).

Almost surely, 2^15572428032 is an apocalyptic number.

15572428032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15572428032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24187355136).

15572428032 is an abundant number, since it is smaller than the sum of its proper divisors (32802282240).

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

15572428032 is an equidigital number, since it uses as much as digits as its factorization.

15572428032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61704 (or 61690 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 15572428032 in words is "fifteen billion, five hundred seventy-two million, four hundred twenty-eight thousand, thirty-two".