5209644 has 48 divisors (see below), whose sum is σ = 13499136. Its totient is φ = 1550400.

The previous prime is 5209627. The next prime is 5209657. The reversal of 5209644 is 4469025.

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, 7729 + ... + 8375.

It is an arithmetic number, because the mean of its divisors is an integer number (281232).

Almost surely, 2^5209644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5209644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6749568).

5209644 is an abundant number, since it is smaller than the sum of its proper divisors (8289492).

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

5209644 is a wasteful number, since it uses less digits than its factorization.

5209644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 5209644 is about 2282.4644575546. The cubic root of 5209644 is about 173.3548576163.

The spelling of 5209644 in words is "five million, two hundred nine thousand, six hundred forty-four".