23128776 has 192 divisors, whose sum is σ = 75816000. Its totient is φ = 6289920.

The previous prime is 23128733. The next prime is 23128793. The reversal of 23128776 is 67782132.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 23128776.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 436366 + ... + 436418.

It is an arithmetic number, because the mean of its divisors is an integer number (394875).

Almost surely, 2^23128776 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 23128776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37908000).

23128776 is an abundant number, since it is smaller than the sum of its proper divisors (52687224).

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

23128776 is a wasteful number, since it uses less digits than its factorization.

23128776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 117 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 23128776 is about 4809.2386091771. The cubic root of 23128776 is about 284.9164667469.

The spelling of 23128776 in words is "twenty-three million, one hundred twenty-eight thousand, seven hundred seventy-six".