4280840 has 16 divisors (see below), whose sum is σ = 9631980. Its totient is φ = 1712320.

The previous prime is 4280827. The next prime is 4280873. The reversal of 4280840 is 480824.

It can be written as a sum of positive squares in 2 ways, for example, as 3694084 + 586756 = 1922^2 + 766^2 .

It is a super-2 number, since 2×4280840² = 36651182211200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53471 + ... + 53550.

Almost surely, 2^4280840 is an apocalyptic number.

4280840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4280840 is an abundant number, since it is smaller than the sum of its proper divisors (5351140).

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

4280840 is a wasteful number, since it uses less digits than its factorization.

4280840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107032 (or 107028 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 4280840 is about 2069.0190912604. The cubic root of 4280840 is about 162.3714486276.

The spelling of 4280840 in words is "four million, two hundred eighty thousand, eight hundred forty".