3421320 has 64 divisors (see below), whose sum is σ = 11733120. Its totient is φ = 781824.

The previous prime is 3421241. The next prime is 3421321. The reversal of 3421320 is 231243.

3421320 = T₂₇₇ + T₂₇₈ + ... + T₃₄₆.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3421320.

It is not an unprimeable number, because it can be changed into a prime (3421321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (183330).

Almost surely, 2^3421320 is an apocalyptic number.

3421320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3421320 is an abundant number, since it is smaller than the sum of its proper divisors (8311800).

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

3421320 is a wasteful number, since it uses less digits than its factorization.

3421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094 (or 4090 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3421320 is about 1849.6810535873. The cubic root of 3421320 is about 150.6831066023.

Adding to 3421320 its reverse (231243), we get a palindrome (3652563).

It can be divided in two parts, 3421 and 320, that added together give a triangular number (3741 = T₈₆).

The spelling of 3421320 in words is "three million, four hundred twenty-one thousand, three hundred twenty".