23015430 has 48 divisors (see below), whose sum is σ = 61124544. Its totient is φ = 6005760.

The previous prime is 23015429. The next prime is 23015491. The reversal of 23015430 is 3451032.

23015430 is a `hidden beast` number, since 230 + 1 + 5 + 430 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

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, 1510 + ... + 6950.

It is an arithmetic number, because the mean of its divisors is an integer number (1273428).

Almost surely, 2^23015430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23015430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30562272).

23015430 is an abundant number, since it is smaller than the sum of its proper divisors (38109114).

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

23015430 is a wasteful number, since it uses less digits than its factorization.

23015430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501 (or 5498 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23015430 is about 4797.4399423026. The cubic root of 23015430 is about 284.4502792292.

Adding to 23015430 its reverse (3451032), we get a palindrome (26466462).

The spelling of 23015430 in words is "twenty-three million, fifteen thousand, four hundred thirty".