23403400 has 24 divisors (see below), whose sum is σ = 54413370. Its totient is φ = 9361280.

The previous prime is 23403379. The next prime is 23403431. The reversal of 23403400 is 430432.

23403400 = T₁₂₂ + T₁₂₃ + ... + T₅₂₁.

It can be written as a sum of positive squares in 3 ways, for example, as 17322244 + 6081156 = 4162^2 + 2466^2 .

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 5 ways as a sum of consecutive naturals, for example, 58309 + ... + 58708.

Almost surely, 2^23403400 is an apocalyptic number.

23403400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23403400 is an abundant number, since it is smaller than the sum of its proper divisors (31009970).

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

23403400 is a wasteful number, since it uses less digits than its factorization.

23403400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117033 (or 117024 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23403400 is about 4837.7060679624. The cubic root of 23403400 is about 286.0397030313.

Adding to 23403400 its reverse (430432), we get a palindrome (23833832).

The spelling of 23403400 in words is "twenty-three million, four hundred three thousand, four hundred".