4639572 has 144 divisors (see below), whose sum is σ = 15361920. Its totient is φ = 1181952.

The previous prime is 4639561. The next prime is 4639597. The reversal of 4639572 is 2759364.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (45360) is a multiple of the sum of its prime divisors (48).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 244179 + ... + 244197.

It is an arithmetic number, because the mean of its divisors is an integer number (106680).

Almost surely, 2^4639572 is an apocalyptic number.

4639572 is a gapful number since it is divisible by the number (42) 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 4639572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7680960).

4639572 is an abundant number, since it is smaller than the sum of its proper divisors (10722348).

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

4639572 is a wasteful number, since it uses less digits than its factorization.

4639572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 48 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 4639572 is about 2153.9665735568. The cubic root of 4639572 is about 166.7858898058.

The spelling of 4639572 in words is "four million, six hundred thirty-nine thousand, five hundred seventy-two".