4391632 has 40 divisors (see below), whose sum is σ = 9838656. Its totient is φ = 1860096.

The previous prime is 4391617. The next prime is 4391657. The reversal of 4391632 is 2361934.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 4391632.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12483 + ... + 12829.

Almost surely, 2^4391632 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 4391632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4919328).

4391632 is an abundant number, since it is smaller than the sum of its proper divisors (5447024).

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

4391632 is a wasteful number, since it uses less digits than its factorization.

4391632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 469 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 4391632 is about 2095.6221033383. The cubic root of 4391632 is about 163.7603081909.

The spelling of 4391632 in words is "four million, three hundred ninety-one thousand, six hundred thirty-two".