23188620 has 192 divisors, whose sum is σ = 83091456. Its totient is φ = 4700160.

The previous prime is 23188609. The next prime is 23188621. The reversal of 23188620 is 2688132.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (23188621) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 169192 + ... + 169328.

It is an arithmetic number, because the mean of its divisors is an integer number (432768).

Almost surely, 2^23188620 is an apocalyptic number.

23188620 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 23188620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41545728).

23188620 is an abundant number, since it is smaller than the sum of its proper divisors (59902836).

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

23188620 is a wasteful number, since it uses less digits than its factorization.

23188620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 23188620 is about 4815.4563646658. The cubic root of 23188620 is about 285.1619885516.

The spelling of 23188620 in words is "twenty-three million, one hundred eighty-eight thousand, six hundred twenty".