23404780 has 24 divisors (see below), whose sum is σ = 56171808. Its totient is φ = 8024448.

The previous prime is 23404763. The next prime is 23404781. The reversal of 23404780 is 8740432.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (23404781) 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 7 ways as a sum of consecutive naturals, for example, 83449 + ... + 83728.

It is an arithmetic number, because the mean of its divisors is an integer number (2340492).

Almost surely, 2^23404780 is an apocalyptic number.

23404780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23404780 is an abundant number, since it is smaller than the sum of its proper divisors (32767028).

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

23404780 is a wasteful number, since it uses less digits than its factorization.

23404780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167193 (or 167191 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 23404780 is about 4837.8486954430. The cubic root of 23404780 is about 286.0453251066.

The spelling of 23404780 in words is "twenty-three million, four hundred four thousand, seven hundred eighty".