3421740 has 48 divisors (see below), whose sum is σ = 10950912. Its totient is φ = 782016.

The previous prime is 3421711. The next prime is 3421751. The reversal of 3421740 is 471243.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3654 + ... + 4493.

It is an arithmetic number, because the mean of its divisors is an integer number (228144).

Almost surely, 2^3421740 is an apocalyptic number.

3421740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3421740 is an abundant number, since it is smaller than the sum of its proper divisors (7529172).

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

3421740 is a wasteful number, since it uses less digits than its factorization.

3421740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166 (or 8164 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 3421740 is about 1849.7945831903. The cubic root of 3421740 is about 150.6892722845.

Adding to 3421740 its reverse (471243), we get a palindrome (3892983).

The spelling of 3421740 in words is "three million, four hundred twenty-one thousand, seven hundred forty".