157878 has 36 divisors (see below), whose sum is σ = 400140. Its totient is φ = 44856.

The previous prime is 157877. The next prime is 157889. The reversal of 157878 is 878751.

157878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157877) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 793 + ... + 971.

It is an arithmetic number, because the mean of its divisors is an integer number (11115).

2¹⁵⁷⁸⁷⁸ is an apocalyptic number.

157878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200070).

157878 is an abundant number, since it is smaller than the sum of its proper divisors (242262).

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

157878 is a wasteful number, since it uses less digits than its factorization.

157878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 191 counting only the distinct ones).

The product of its digits is 15680, while the sum is 36.

The square root of 157878 is about 397.3386464969. The cubic root of 157878 is about 54.0472836881.

It can be divided in two parts, 157 and 878, that added together give a triangular number (1035 = T₄₅).

The spelling of 157878 in words is "one hundred fifty-seven thousand, eight hundred seventy-eight".