23157836 has 24 divisors (see below), whose sum is σ = 43775424. Its totient is φ = 10656000.

The previous prime is 23157821. The next prime is 23157839. The reversal of 23157836 is 63875132.

It is a junction number, because it is equal to n+sod(n) for n = 23157796 and 23157805.

It is not an unprimeable number, because it can be changed into a prime (23157839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30461 + ... + 31211.

It is an arithmetic number, because the mean of its divisors is an integer number (1823976).

Almost surely, 2^23157836 is an apocalyptic number.

23157836 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23157836 is a deficient number, since it is larger than the sum of its proper divisors (20617588).

23157836 is a wasteful number, since it uses less digits than its factorization.

23157836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1359 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 23157836 is about 4812.2589290270. The cubic root of 23157836 is about 285.0357439523.

The spelling of 23157836 in words is "twenty-three million, one hundred fifty-seven thousand, eight hundred thirty-six".