23279388 has 48 divisors (see below), whose sum is σ = 61178880. Its totient is φ = 6825600.

The previous prime is 23279387. The next prime is 23279393. The reversal of 23279388 is 88397232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23279387) 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 in 15 ways as a sum of consecutive naturals, for example, 1248 + ... + 6936.

It is an arithmetic number, because the mean of its divisors is an integer number (1274560).

Almost surely, 2^23279388 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 23279388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30589440).

23279388 is an abundant number, since it is smaller than the sum of its proper divisors (37899492).

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

23279388 is a wasteful number, since it uses less digits than its factorization.

23279388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5736 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 23279388 is about 4824.8718117687. The cubic root of 23279388 is about 285.5335772058.

The spelling of 23279388 in words is "twenty-three million, two hundred seventy-nine thousand, three hundred eighty-eight".