157347138 has 64 divisors (see below), whose sum is σ = 362517120. Its totient is φ = 45100032.

The previous prime is 157347119. The next prime is 157347143. The reversal of 157347138 is 831743751.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 157347096 and 157347105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141328 + ... + 142436.

It is an arithmetic number, because the mean of its divisors is an integer number (5664330).

Almost surely, 2^157347138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157347138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181258560).

157347138 is an abundant number, since it is smaller than the sum of its proper divisors (205169982).

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

157347138 is a wasteful number, since it uses less digits than its factorization.

157347138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251.

The product of its digits is 70560, while the sum is 39.

The square root of 157347138 is about 12543.8087517309. The cubic root of 157347138 is about 539.8663798335.

The spelling of 157347138 in words is "one hundred fifty-seven million, three hundred forty-seven thousand, one hundred thirty-eight".