23277280 has 144 divisors (see below), whose sum is σ = 64520064. Its totient is φ = 7879680.

The previous prime is 23277269. The next prime is 23277281. The reversal of 23277280 is 8277232.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23277281) 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, 750865 + ... + 750895.

It is an arithmetic number, because the mean of its divisors is an integer number (448056).

Almost surely, 2^23277280 is an apocalyptic number.

23277280 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 23277280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32260032).

23277280 is an abundant number, since it is smaller than the sum of its proper divisors (41242784).

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

23277280 is a wasteful number, since it uses less digits than its factorization.

23277280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 23277280 is about 4824.6533554236. The cubic root of 23277280 is about 285.5249583803.

The spelling of 23277280 in words is "twenty-three million, two hundred seventy-seven thousand, two hundred eighty".