4552640 has 56 divisors (see below), whose sum is σ = 11137392. Its totient is φ = 1771520.

The previous prime is 4552637. The next prime is 4552649. The reversal of 4552640 is 462554.

4552640 is nontrivially palindromic in base 15.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4552649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12947 + ... + 13293.

It is an arithmetic number, because the mean of its divisors is an integer number (198882).

Almost surely, 2^4552640 is an apocalyptic number.

4552640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4552640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5568696).

4552640 is an abundant number, since it is smaller than the sum of its proper divisors (6584752).

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

4552640 is a wasteful number, since it uses less digits than its factorization.

4552640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 4552640 is about 2133.6916365773. The cubic root of 4552640 is about 165.7376219896.

The spelling of 4552640 in words is "four million, five hundred fifty-two thousand, six hundred forty".