23283280 has 20 divisors (see below), whose sum is σ = 54133812. Its totient is φ = 9313280.

The previous prime is 23283241. The next prime is 23283289. The reversal of 23283280 is 8238232.

It can be written as a sum of positive squares in 2 ways, for example, as 13017664 + 10265616 = 3608^2 + 3204^2 .

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

It is a super-2 number, since 2×23283280² = 1084222255116800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23283289) 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, 145441 + ... + 145600.

Almost surely, 2^23283280 is an apocalyptic number.

23283280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23283280 is an abundant number, since it is smaller than the sum of its proper divisors (30850532).

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

23283280 is a wasteful number, since it uses less digits than its factorization.

23283280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291054 (or 291048 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 23283280 is about 4825.2751216900. The cubic root of 23283280 is about 285.5494887747.

The spelling of 23283280 in words is "twenty-three million, two hundred eighty-three thousand, two hundred eighty".