1532713728 has 324 divisors, whose sum is σ = 5159673288. Its totient is φ = 402554880.

The previous prime is 1532713711. The next prime is 1532713729. The reversal of 1532713728 is 8273172351.

It is a super-2 number, since 2×1532713728² = 4698422743999315968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1532713729) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6359688 + ... + 6359928.

Almost surely, 2^1532713728 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 1532713728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2579836644).

1532713728 is an abundant number, since it is smaller than the sum of its proper divisors (3626959560).

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

1532713728 is a wasteful number, since it uses less digits than its factorization.

1532713728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 266 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 1532713728 is about 39149.8879691884. The cubic root of 1532713728 is about 1152.9762172623.

The spelling of 1532713728 in words is "one billion, five hundred thirty-two million, seven hundred thirteen thousand, seven hundred twenty-eight".