4020732 has 48 divisors (see below), whose sum is σ = 10617600. Its totient is φ = 1315440.

The previous prime is 4020727. The next prime is 4020733. The reversal of 4020732 is 2370204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020733) 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, 6057 + ... + 6687.

It is an arithmetic number, because the mean of its divisors is an integer number (221200).

Almost surely, 2^4020732 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 4020732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5308800).

4020732 is an abundant number, since it is smaller than the sum of its proper divisors (6596868).

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

4020732 is a wasteful number, since it uses less digits than its factorization.

4020732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 4020732 is about 2005.1763014758. The cubic root of 4020732 is about 159.0138827323.

Adding to 4020732 its reverse (2370204), we get a palindrome (6390936).

The spelling of 4020732 in words is "four million, twenty thousand, seven hundred thirty-two".