23455780 has 48 divisors (see below), whose sum is σ = 52380720. Its totient is φ = 8805888.

The previous prime is 23455771. The next prime is 23455799. The reversal of 23455780 is 8755432.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5410276 + 18045504 = 2326^2 + 4248^2 .

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 15 ways as a sum of consecutive naturals, for example, 20914 + ... + 22006.

It is an arithmetic number, because the mean of its divisors is an integer number (1091265).

Almost surely, 2^23455780 is an apocalyptic number.

23455780 is a gapful number since it is divisible by the number (20) 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 23455780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26190360).

23455780 is an abundant number, since it is smaller than the sum of its proper divisors (28924940).

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

23455780 is a wasteful number, since it uses less digits than its factorization.

23455780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 23455780 is about 4843.1167650595. The cubic root of 23455780 is about 286.2529426418.

The spelling of 23455780 in words is "twenty-three million, four hundred fifty-five thousand, seven hundred eighty".