157438344 has 128 divisors (see below), whose sum is σ = 465960960. Its totient is φ = 43400448.

The previous prime is 157438339. The next prime is 157438349. The reversal of 157438344 is 443834751.

It is an interprime number because it is at equal distance from previous prime (157438339) and next prime (157438349).

It is a super-2 number, since 2×157438344² = 49573664322924672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157438349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1002714 + ... + 1002870.

It is an arithmetic number, because the mean of its divisors is an integer number (3640320).

Almost surely, 2^157438344 is an apocalyptic number.

157438344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157438344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232980480).

157438344 is an abundant number, since it is smaller than the sum of its proper divisors (308522616).

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

157438344 is a wasteful number, since it uses less digits than its factorization.

157438344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 343 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 157438344 is about 12547.4437237232. The cubic root of 157438344 is about 539.9706705607.

The spelling of 157438344 in words is "one hundred fifty-seven million, four hundred thirty-eight thousand, three hundred forty-four".