157438 has 8 divisors (see below), whose sum is σ = 237888. Its totient is φ = 78144.

The previous prime is 157433. The next prime is 157457. The reversal of 157438 is 834751.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270 + ... + 622.

It is an arithmetic number, because the mean of its divisors is an integer number (29736).

2¹⁵⁷⁴³⁸ is an apocalyptic number.

157438 is a deficient number, since it is larger than the sum of its proper divisors (80450).

157438 is a wasteful number, since it uses less digits than its factorization.

157438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578.

The product of its digits is 3360, while the sum is 28.

The square root of 157438 is about 396.7845763131. The cubic root of 157438 is about 53.9970277285.

It can be divided in two parts, 15743 and 8, that added together give a palindrome (15751).

The spelling of 157438 in words is "one hundred fifty-seven thousand, four hundred thirty-eight".