153232728 has 64 divisors (see below), whose sum is σ = 419454720. Its totient is φ = 46262400.

The previous prime is 153232669. The next prime is 153232733. The reversal of 153232728 is 827232351.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82773 + ... + 84603.

It is an arithmetic number, because the mean of its divisors is an integer number (6553980).

Almost surely, 2^153232728 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 153232728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209727360).

153232728 is an abundant number, since it is smaller than the sum of its proper divisors (266221992).

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

153232728 is a wasteful number, since it uses less digits than its factorization.

153232728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168 (or 2164 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 153232728 is about 12378.7207739734. The cubic root of 153232728 is about 535.1191722177.

The spelling of 153232728 in words is "one hundred fifty-three million, two hundred thirty-two thousand, seven hundred twenty-eight".