23091648 has 56 divisors (see below), whose sum is σ = 61642752. Its totient is φ = 7628544.

The previous prime is 23091647. The next prime is 23091659. The reversal of 23091648 is 84619032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23091643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23911 + ... + 24857.

Almost surely, 2^23091648 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 23091648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30821376).

23091648 is an abundant number, since it is smaller than the sum of its proper divisors (38551104).

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

23091648 is a wasteful number, since it uses less digits than its factorization.

23091648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 23091648 is about 4805.3769883330. The cubic root of 23091648 is about 284.7639288575.

The spelling of 23091648 in words is "twenty-three million, ninety-one thousand, six hundred forty-eight".