3498240 has 72 divisors (see below), whose sum is σ = 11184768. Its totient is φ = 931840.

The previous prime is 3498211. The next prime is 3498247. The reversal of 3498240 is 428943.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3498198 and 3498207.

It is not an unprimeable number, because it can be changed into a prime (3498247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3385 + ... + 4295.

It is an arithmetic number, because the mean of its divisors is an integer number (155344).

Almost surely, 2^3498240 is an apocalyptic number.

3498240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3498240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5592384).

3498240 is an abundant number, since it is smaller than the sum of its proper divisors (7686528).

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

3498240 is an equidigital number, since it uses as much as digits as its factorization.

3498240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 3498240 is about 1870.3582544529. The cubic root of 3498240 is about 151.8039948192.

The spelling of 3498240 in words is "three million, four hundred ninety-eight thousand, two hundred forty".