15728748 has 48 divisors (see below), whose sum is σ = 42975744. Its totient is φ = 4383360.

The previous prime is 15728747. The next prime is 15728767. The reversal of 15728748 is 84782751.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (15728747) 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, 1161 + ... + 5727.

It is an arithmetic number, because the mean of its divisors is an integer number (895328).

Almost surely, 2^15728748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15728748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21487872).

15728748 is an abundant number, since it is smaller than the sum of its proper divisors (27246996).

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

15728748 is a wasteful number, since it uses less digits than its factorization.

15728748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4622 (or 4620 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 15728748 is about 3965.9485624501. The cubic root of 15728748 is about 250.5521025004.

The spelling of 15728748 in words is "fifteen million, seven hundred twenty-eight thousand, seven hundred forty-eight".