23321628 has 96 divisors (see below), whose sum is σ = 67173120. Its totient is φ = 6937920.

The previous prime is 23321621. The next prime is 23321653. The reversal of 23321628 is 82612332.

23321628 is a `hidden beast` number, since 2 + 3 + 32 + 1 + 628 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (3456) is a multiple of the sum of its prime factors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321621) 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 31 ways as a sum of consecutive naturals, for example, 79450 + ... + 79742.

It is an arithmetic number, because the mean of its divisors is an integer number (699720).

Almost surely, 2^23321628 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 23321628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33586560).

23321628 is an abundant number, since it is smaller than the sum of its proper divisors (43851492).

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

23321628 is a wasteful number, since it uses less digits than its factorization.

23321628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 376 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 23321628 is about 4829.2471462952. The cubic root of 23321628 is about 285.7061712457.

The spelling of 23321628 in words is "twenty-three million, three hundred twenty-one thousand, six hundred twenty-eight".