3489720 has 64 divisors (see below), whose sum is σ = 11279520. Its totient is φ = 858624.

The previous prime is 3489713. The next prime is 3489757. The reversal of 3489720 is 279843.

It is a congruent number.

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, 442 + ... + 2678.

Almost surely, 2^3489720 is an apocalyptic number.

3489720 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 3489720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5639760).

3489720 is an abundant number, since it is smaller than the sum of its proper divisors (7789800).

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

3489720 is a wasteful number, since it uses less digits than its factorization.

3489720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 3489720 is about 1868.0792274419. The cubic root of 3489720 is about 151.6806545620.

The spelling of 3489720 in words is "three million, four hundred eighty-nine thousand, seven hundred twenty".