23257836 has 144 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 6082560.

The previous prime is 23257799. The next prime is 23257849. The reversal of 23257836 is 63875232.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 23257836.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 261280 + ... + 261368.

It is an arithmetic number, because the mean of its divisors is an integer number (507780).

Almost surely, 2^23257836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23257836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160).

23257836 is an abundant number, since it is smaller than the sum of its proper divisors (49862484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23257836 is a wasteful number, since it uses less digits than its factorization.

23257836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 179 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 23257836 is about 4822.6378673917. The cubic root of 23257836 is about 285.4454345723.

The spelling of 23257836 in words is "twenty-three million, two hundred fifty-seven thousand, eight hundred thirty-six".