3487240 has 16 divisors (see below), whose sum is σ = 7846380. Its totient is φ = 1394880.

The previous prime is 3487229. The next prime is 3487273. The reversal of 3487240 is 427843.

It can be written as a sum of positive squares in 2 ways, for example, as 3407716 + 79524 = 1846^2 + 282^2 .

It is a super-3 number, since 3×3487240³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3487199 and 3487208.

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, 43551 + ... + 43630.

Almost surely, 2^3487240 is an apocalyptic number.

It is an amenable number.

3487240 is an abundant number, since it is smaller than the sum of its proper divisors (4359140).

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

3487240 is a wasteful number, since it uses less digits than its factorization.

3487240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87192 (or 87188 counting only the distinct ones).

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

The square root of 3487240 is about 1867.4153260590. The cubic root of 3487240 is about 151.6447149863.

The spelling of 3487240 in words is "three million, four hundred eighty-seven thousand, two hundred forty".