23403783 has 16 divisors (see below), whose sum is σ = 34765920. Its totient is φ = 13905024.

The previous prime is 23403773. The next prime is 23403823. The reversal of 23403783 is 38730432.

It is not a de Polignac number, because 23403783 - 2⁴ = 23403767 is a prime.

It is a super-2 number, since 2×23403783² = 1095474117422178, which contains 22 as substring.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 23403783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23403733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9216 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (2172870).

Almost surely, 2^23403783 is an apocalyptic number.

23403783 is a deficient number, since it is larger than the sum of its proper divisors (11362137).

23403783 is a wasteful number, since it uses less digits than its factorization.

23403783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20738.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 23403783 is about 4837.7456526775. The cubic root of 23403783 is about 286.0412633831.

The spelling of 23403783 in words is "twenty-three million, four hundred three thousand, seven hundred eighty-three".