4280240 has 20 divisors (see below), whose sum is σ = 9951744. Its totient is φ = 1712064.

The previous prime is 4280203. The next prime is 4280249. The reversal of 4280240 is 420824.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (4280249) 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, 26672 + ... + 26831.

Almost surely, 2^4280240 is an apocalyptic number.

4280240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4280240 is an abundant number, since it is smaller than the sum of its proper divisors (5671504).

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

4280240 is a wasteful number, since it uses less digits than its factorization.

4280240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53516 (or 53510 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 4280240 is about 2068.8740899339. The cubic root of 4280240 is about 162.3638623111.

The spelling of 4280240 in words is "four million, two hundred eighty thousand, two hundred forty".