3402440 has 16 divisors (see below), whose sum is σ = 7655580. Its totient is φ = 1360960.

The previous prime is 3402439. The next prime is 3402473. The reversal of 3402440 is 442043.

It can be written as a sum of positive squares in 2 ways, for example, as 3247204 + 155236 = 1802^2 + 394^2 .

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, 42491 + ... + 42570.

Almost surely, 2^3402440 is an apocalyptic number.

It is an amenable number.

3402440 is an abundant number, since it is smaller than the sum of its proper divisors (4253140).

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

3402440 is a wasteful number, since it uses less digits than its factorization.

3402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85072 (or 85068 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 3402440 is about 1844.5704106919. The cubic root of 3402440 is about 150.4054217526.

Adding to 3402440 its reverse (442043), we get a palindrome (3844483).

The spelling of 3402440 in words is "three million, four hundred two thousand, four hundred forty".