1032157728 has 240 divisors, whose sum is σ = 3500481600. Its totient is φ = 292253184.

The previous prime is 1032157723. The next prime is 1032157751. The reversal of 1032157728 is 8277512301.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1032157692 and 1032157701.

It is not an unprimeable number, because it can be changed into a prime (1032157723) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2957298 + ... + 2957646.

It is an arithmetic number, because the mean of its divisors is an integer number (14585340).

Almost surely, 2^1032157728 is an apocalyptic number.

1032157728 is a gapful number since it is divisible by the number (18) 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 1032157728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750240800).

1032157728 is an abundant number, since it is smaller than the sum of its proper divisors (2468323872).

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

1032157728 is a wasteful number, since it uses less digits than its factorization.

1032157728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1032157728 is about 32127.2116437141. The cubic root of 1032157728 is about 1010.6063502811.

The spelling of 1032157728 in words is "one billion, thirty-two million, one hundred fifty-seven thousand, seven hundred twenty-eight".