3649020 has 48 divisors (see below), whose sum is σ = 10395168. Its totient is φ = 956160.

The previous prime is 3649003. The next prime is 3649027. The reversal of 3649020 is 209463.

3649020 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649027) 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, 3162 + ... + 4158.

It is an arithmetic number, because the mean of its divisors is an integer number (216566).

Almost surely, 2^3649020 is an apocalyptic number.

3649020 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 3649020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5197584).

3649020 is an abundant number, since it is smaller than the sum of its proper divisors (6746148).

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

3649020 is a wasteful number, since it uses less digits than its factorization.

3649020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 3649020 is about 1910.2408225143. The cubic root of 3649020 is about 153.9543913964.

The spelling of 3649020 in words is "three million, six hundred forty-nine thousand, twenty".