157716378 has 48 divisors (see below), whose sum is σ = 380877120. Its totient is φ = 46873728.

The previous prime is 157716373. The next prime is 157716379. The reversal of 157716378 is 873617751.

157716378 is a `hidden beast` number, since 1 + 5 + 7 + 7 + 1 + 637 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (157716371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7750 + ... + 19377.

It is an arithmetic number, because the mean of its divisors is an integer number (7934940).

Almost surely, 2^157716378 is an apocalyptic number.

157716378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

157716378 is an abundant number, since it is smaller than the sum of its proper divisors (223160742).

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

157716378 is a wasteful number, since it uses less digits than its factorization.

157716378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27171 (or 27168 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 157716378 is about 12558.5181450679. The cubic root of 157716378 is about 540.2883439479.

It can be divided in two parts, 1577 and 16378, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 157716378 in words is "one hundred fifty-seven million, seven hundred sixteen thousand, three hundred seventy-eight".