97823138 has 16 divisors (see below), whose sum is σ = 170447424. Its totient is φ = 41236560.

The previous prime is 97823137. The next prime is 97823189. The reversal of 97823138 is 83132879.

It is a junction number, because it is equal to n+sod(n) for n = 97823095 and 97823104.

It is not an unprimeable number, because it can be changed into a prime (97823137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56420 + ... + 58127.

It is an arithmetic number, because the mean of its divisors is an integer number (10652964).

Almost surely, 2^97823138 is an apocalyptic number.

97823138 is a deficient number, since it is larger than the sum of its proper divisors (72624286).

97823138 is a wasteful number, since it uses less digits than its factorization.

97823138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114617.

The product of its digits is 72576, while the sum is 41.

The square root of 97823138 is about 9890.5580226800. The cubic root of 97823138 is about 460.7661115175.

The spelling of 97823138 in words is "ninety-seven million, eight hundred twenty-three thousand, one hundred thirty-eight".