157728208 has 40 divisors (see below), whose sum is σ = 336853440. Its totient is φ = 70947840.

The previous prime is 157728199. The next prime is 157728223. The reversal of 157728208 is 802827751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12453 + ... + 21691.

It is an arithmetic number, because the mean of its divisors is an integer number (8421336).

Almost surely, 2^157728208 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 157728208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168426720).

157728208 is an abundant number, since it is smaller than the sum of its proper divisors (179125232).

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

157728208 is a wasteful number, since it uses less digits than its factorization.

157728208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9355 (or 9349 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 157728208 is about 12558.9891312956. The cubic root of 157728208 is about 540.3018522708.

The spelling of 157728208 in words is "one hundred fifty-seven million, seven hundred twenty-eight thousand, two hundred eight".