23115030 has 48 divisors (see below), whose sum is σ = 57743280. Its totient is φ = 5914944.

The previous prime is 23114999. The next prime is 23115041. The reversal of 23115030 is 3051132.

It is a happy number.

It is a super-2 number, since 2×23115030² = 1068609223801800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 141729 + ... + 141891.

It is an arithmetic number, because the mean of its divisors is an integer number (1202985).

Almost surely, 2^23115030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23115030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28871640).

23115030 is an abundant number, since it is smaller than the sum of its proper divisors (34628250).

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

23115030 is a wasteful number, since it uses less digits than its factorization.

23115030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 23115030 is about 4807.8092724234. The cubic root of 23115030 is about 284.8600112750.

Adding to 23115030 its reverse (3051132), we get a palindrome (26166162).

The spelling of 23115030 in words is "twenty-three million, one hundred fifteen thousand, thirty".