157798 has 8 divisors (see below), whose sum is σ = 238392. Its totient is φ = 78336.

The previous prime is 157793. The next prime is 157799. The reversal of 157798 is 897751.

157798 is nontrivially palindromic in base 14.

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 (157793) by changing a digit.

157798 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, 361 + ... + 667.

It is an arithmetic number, because the mean of its divisors is an integer number (29799).

2¹⁵⁷⁷⁹⁸ is an apocalyptic number.

157798 is a deficient number, since it is larger than the sum of its proper divisors (80594).

157798 is a wasteful number, since it uses less digits than its factorization.

157798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566.

The product of its digits is 17640, while the sum is 37.

The square root of 157798 is about 397.2379639460. The cubic root of 157798 is about 54.0381531923.

The spelling of 157798 in words is "one hundred fifty-seven thousand, seven hundred ninety-eight".