3249720 has 160 divisors (see below), whose sum is σ = 11761200. Its totient is φ = 801792.

The previous prime is 3249713. The next prime is 3249733. The reversal of 3249720 is 279423.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55051 + ... + 55109.

Almost surely, 2^3249720 is an apocalyptic number.

3249720 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 3249720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5880600).

3249720 is an abundant number, since it is smaller than the sum of its proper divisors (8511480).

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

3249720 is a wasteful number, since it uses less digits than its factorization.

3249720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 3249720 is about 1802.6979780318. The cubic root of 3249720 is about 148.1205494577.

It can be divided in two parts, 3249 and 720, that added together give a square (3969 = 63²).

The spelling of 3249720 in words is "three million, two hundred forty-nine thousand, seven hundred twenty".