97857238 has 8 divisors (see below), whose sum is σ = 146889288. Its totient is φ = 48894144.

The previous prime is 97857187. The next prime is 97857269. The reversal of 97857238 is 83275879.

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

It is a junction number, because it is equal to n+sod(n) for n = 97857191 and 97857200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13531 + ... + 19462.

It is an arithmetic number, because the mean of its divisors is an integer number (18361161).

Almost surely, 2^97857238 is an apocalyptic number.

97857238 is a deficient number, since it is larger than the sum of its proper divisors (49032050).

97857238 is a wasteful number, since it uses less digits than its factorization.

97857238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34478.

The product of its digits is 846720, while the sum is 49.

The square root of 97857238 is about 9892.2817388103. The cubic root of 97857238 is about 460.8196445206.

The spelling of 97857238 in words is "ninety-seven million, eight hundred fifty-seven thousand, two hundred thirty-eight".