3649530 has 32 divisors (see below), whose sum is σ = 8812800. Its totient is φ = 967232.

The previous prime is 3649517. The next prime is 3649531. The reversal of 3649530 is 359463.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a d-powerful number, because it can be written as 3⁴ + 6⁸ + 4⁷ + 9² + 5⁹ + 3⁵ + 0 .

It is not an unprimeable number, because it can be changed into a prime (3649531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6916 + ... + 7424.

It is an arithmetic number, because the mean of its divisors is an integer number (275400).

Almost surely, 2^3649530 is an apocalyptic number.

3649530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3649530 is an abundant number, since it is smaller than the sum of its proper divisors (5163270).

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

3649530 is a wasteful number, since it uses less digits than its factorization.

3649530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 3649530 is about 1910.3743088725. The cubic root of 3649530 is about 153.9615634665.

The spelling of 3649530 in words is "three million, six hundred forty-nine thousand, five hundred thirty".