23400024 has 64 divisors (see below), whose sum is σ = 62778240. Its totient is φ = 7242240.

The previous prime is 23400023. The next prime is 23400029. The reversal of 23400024 is 42000432.

It is a happy number.

It is a super-2 number, since 2×23400024² = 1095122246401152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23399976 and 23400012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23400023) 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 15 ways as a sum of consecutive naturals, for example, 33519 + ... + 34209.

It is an arithmetic number, because the mean of its divisors is an integer number (980910).

Almost surely, 2^23400024 is an apocalyptic number.

23400024 is a gapful number since it is divisible by the number (24) 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 23400024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31389120).

23400024 is an abundant number, since it is smaller than the sum of its proper divisors (39378216).

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

23400024 is a wasteful number, since it uses less digits than its factorization.

23400024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 23400024 is about 4837.3571296732. The cubic root of 23400024 is about 286.0259483849.

Adding to 23400024 its reverse (42000432), we get a palindrome (65400456).

The spelling of 23400024 in words is "twenty-three million, four hundred thousand, twenty-four".