5639928 has 64 divisors (see below), whose sum is σ = 16416000. Its totient is φ = 1581312.

The previous prime is 5639927. The next prime is 5639929. The reversal of 5639928 is 8299365.

5639928 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5639927) and next prime (5639929).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 5639928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5639927) 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, 9628 + ... + 10196.

It is an arithmetic number, because the mean of its divisors is an integer number (256500).

Almost surely, 2^5639928 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 5639928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8208000).

5639928 is an abundant number, since it is smaller than the sum of its proper divisors (10776072).

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

5639928 is a wasteful number, since it uses less digits than its factorization.

5639928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 640 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 5639928 is about 2374.8532586246. The cubic root of 5639928 is about 178.0018515988.

The spelling of 5639928 in words is "five million, six hundred thirty-nine thousand, nine hundred twenty-eight".