3644290 has 48 divisors (see below), whose sum is σ = 7581672. Its totient is φ = 1253376.

The previous prime is 3644279. The next prime is 3644297. The reversal of 3644290 is 924463.

It can be written as a sum of positive squares in 12 ways, for example, as 543169 + 3101121 = 737^2 + 1761^2 .

It is not an unprimeable number, because it can be changed into a prime (3644297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37522 + ... + 37618.

Almost surely, 2^3644290 is an apocalyptic number.

3644290 is an abundant number, since it is smaller than the sum of its proper divisors (3937382).

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

3644290 is a wasteful number, since it uses less digits than its factorization.

3644290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3644290 is about 1909.0023572537. The cubic root of 3644290 is about 153.8878421000.

The spelling of 3644290 in words is "three million, six hundred forty-four thousand, two hundred ninety".