23677780 has 72 divisors (see below), whose sum is σ = 59495688. Its totient is φ = 7886592.

The previous prime is 23677777. The next prime is 23677783. The reversal of 23677780 is 8777632.

It is an interprime number because it is at equal distance from previous prime (23677777) and next prime (23677783).

It can be written as a sum of positive squares in 4 ways, for example, as 3732624 + 19945156 = 1932^2 + 4466^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23677783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35934 + ... + 36586.

It is an arithmetic number, because the mean of its divisors is an integer number (826329).

Almost surely, 2^23677780 is an apocalyptic number.

23677780 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 23677780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29747844).

23677780 is an abundant number, since it is smaller than the sum of its proper divisors (35817908).

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

23677780 is a wasteful number, since it uses less digits than its factorization.

23677780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 23677780 is about 4865.9819152973. The cubic root of 23677780 is about 287.1531999843.

The spelling of 23677780 in words is "twenty-three million, six hundred seventy-seven thousand, seven hundred eighty".