23157436 has 6 divisors (see below), whose sum is σ = 40525520. Its totient is φ = 11578716.

The previous prime is 23157419. The next prime is 23157437. The reversal of 23157436 is 63475132.

It is a junction number, because it is equal to n+sod(n) for n = 23157398 and 23157407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157437) 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 as a sum of consecutive naturals, namely, 2894676 + ... + 2894683.

Almost surely, 2^23157436 is an apocalyptic number.

It is an amenable number.

23157436 is a deficient number, since it is larger than the sum of its proper divisors (17368084).

23157436 is a wasteful number, since it uses less digits than its factorization.

23157436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789363 (or 5789361 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 23157436 is about 4812.2173683241. The cubic root of 23157436 is about 285.0341028238.

The spelling of 23157436 in words is "twenty-three million, one hundred fifty-seven thousand, four hundred thirty-six".