280240572 has 24 divisors (see below), whose sum is σ = 676443600. Its totient is φ = 90192256.

The previous prime is 280240567. The next prime is 280240573. The reversal of 280240572 is 275042082.

280240572 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

280240572 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280240573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402297 + ... + 402992.

It is an arithmetic number, because the mean of its divisors is an integer number (28185150).

Almost surely, 2^280240572 is an apocalyptic number.

It is an amenable number.

280240572 is an abundant number, since it is smaller than the sum of its proper divisors (396203028).

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

280240572 is a wasteful number, since it uses less digits than its factorization.

280240572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805325 (or 805323 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 280240572 is about 16740.3874507133. The cubic root of 280240572 is about 654.4005719662.

The spelling of 280240572 in words is "two hundred eighty million, two hundred forty thousand, five hundred seventy-two".