23427280 has 20 divisors (see below), whose sum is σ = 54468612. Its totient is φ = 9370880.

The previous prime is 23427259. The next prime is 23427281. The reversal of 23427280 is 8272432.

It can be written as a sum of positive squares in 2 ways, for example, as 4032064 + 19395216 = 2008^2 + 4404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23427281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146341 + ... + 146500.

Almost surely, 2^23427280 is an apocalyptic number.

23427280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23427280 is an abundant number, since it is smaller than the sum of its proper divisors (31041332).

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

23427280 is a wasteful number, since it uses less digits than its factorization.

23427280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292854 (or 292848 counting only the distinct ones).

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

The square root of 23427280 is about 4840.1735506075. The cubic root of 23427280 is about 286.1369582190.

The spelling of 23427280 in words is "twenty-three million, four hundred twenty-seven thousand, two hundred eighty".