157828378 has 8 divisors (see below), whose sum is σ = 244379520. Its totient is φ = 76368540.

The previous prime is 157828367. The next prime is 157828379. The reversal of 157828378 is 873828751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×157828378² = 49819593804221768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157828379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272748 + ... + 1272871.

It is an arithmetic number, because the mean of its divisors is an integer number (30547440).

Almost surely, 2^157828378 is an apocalyptic number.

157828378 is a deficient number, since it is larger than the sum of its proper divisors (86551142).

157828378 is a wasteful number, since it uses less digits than its factorization.

157828378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545652.

The product of its digits is 752640, while the sum is 49.

The square root of 157828378 is about 12562.9764785261. The cubic root of 157828378 is about 540.4162063317.

The spelling of 157828378 in words is "one hundred fifty-seven million, eight hundred twenty-eight thousand, three hundred seventy-eight".