3421280 has 24 divisors (see below), whose sum is σ = 8083152. Its totient is φ = 1368448.

The previous prime is 3421241. The next prime is 3421321. The reversal of 3421280 is 821243.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 10532 + ... + 10851.

It is an arithmetic number, because the mean of its divisors is an integer number (336798).

Almost surely, 2^3421280 is an apocalyptic number.

It is an amenable number.

3421280 is an abundant number, since it is smaller than the sum of its proper divisors (4661872).

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

3421280 is a wasteful number, since it uses less digits than its factorization.

3421280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21398 (or 21390 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 3421280 is about 1849.6702408808. The cubic root of 3421280 is about 150.6825193682.

The spelling of 3421280 in words is "three million, four hundred twenty-one thousand, two hundred eighty".