23218879320 has 864 divisors, whose sum is σ = 100891299600. Its totient is φ = 4577513472.

The previous prime is 23218879303. The next prime is 23218879331. The reversal of 23218879320 is 2397881232.

23218879320 is a `hidden beast` number, since 232 + 18 + 87 + 9 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 318066804 + ... + 318066876.

Almost surely, 2^23218879320 is an apocalyptic number.

23218879320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23218879320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50445649800).

23218879320 is an abundant number, since it is smaller than the sum of its proper divisors (77672420280).

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

23218879320 is a wasteful number, since it uses less digits than its factorization.

23218879320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 23218879320 in words is "twenty-three billion, two hundred eighteen million, eight hundred seventy-nine thousand, three hundred twenty".