157390 has 8 divisors (see below), whose sum is σ = 283320. Its totient is φ = 62952.

The previous prime is 157363. The next prime is 157393. The reversal of 157390 is 93751.

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

It is a super-2 number, since 2×157390² = 49543224200, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157393) by changing a digit.

157390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7860 + ... + 7879.

It is an arithmetic number, because the mean of its divisors is an integer number (35415).

2¹⁵⁷³⁹⁰ is an apocalyptic number.

157390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157390 is a deficient number, since it is larger than the sum of its proper divisors (125930).

157390 is a wasteful number, since it uses less digits than its factorization.

157390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15746.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 157390 is about 396.7240854801. The cubic root of 157390 is about 53.9915395982.

The spelling of 157390 in words is "one hundred fifty-seven thousand, three hundred ninety".