4511988 has 72 divisors (see below), whose sum is σ = 12719616. Its totient is φ = 1339200.

The previous prime is 4511971. The next prime is 4511989. The reversal of 4511988 is 8891154.

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

Its product of digits (11520) is a multiple of the sum of its prime divisors (360).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4511989) 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 23 ways as a sum of consecutive naturals, for example, 14353 + ... + 14663.

Almost surely, 2^4511988 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 4511988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6359808).

4511988 is an abundant number, since it is smaller than the sum of its proper divisors (8207628).

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

4511988 is a wasteful number, since it uses less digits than its factorization.

4511988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 360 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 4511988 is about 2124.1440629110. The cubic root of 4511988 is about 165.2428380212.

The spelling of 4511988 in words is "four million, five hundred eleven thousand, nine hundred eighty-eight".