23865426 has 48 divisors (see below), whose sum is σ = 56434560. Its totient is φ = 7244640.

The previous prime is 23865383. The next prime is 23865437. The reversal of 23865426 is 62456832.

It is a super-2 number, since 2×23865426² = 1139117116322952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17841 + ... + 19131.

It is an arithmetic number, because the mean of its divisors is an integer number (1175720).

Almost surely, 2^23865426 is an apocalyptic number.

23865426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 23865426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28217280).

23865426 is an abundant number, since it is smaller than the sum of its proper divisors (32569134).

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

23865426 is a wasteful number, since it uses less digits than its factorization.

23865426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1388 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 23865426 is about 4885.2252762795. The cubic root of 23865426 is about 287.9097662919.

The spelling of 23865426 in words is "twenty-three million, eight hundred sixty-five thousand, four hundred twenty-six".