157878272 has 48 divisors (see below), whose sum is σ = 318689280. Its totient is φ = 78188544.

The previous prime is 157878271. The next prime is 157878283. The reversal of 157878272 is 272878751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157878271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259793 + ... + 260399.

It is an arithmetic number, because the mean of its divisors is an integer number (6639360).

Almost surely, 2^157878272 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 157878272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159344640).

157878272 is an abundant number, since it is smaller than the sum of its proper divisors (160811008).

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

157878272 is an equidigital number, since it uses as much as digits as its factorization.

157878272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 736 counting only the distinct ones).

The product of its digits is 439040, while the sum is 47.

The square root of 157878272 is about 12564.9620771413. The cubic root of 157878272 is about 540.4731472649.

The spelling of 157878272 in words is "one hundred fifty-seven million, eight hundred seventy-eight thousand, two hundred seventy-two".