4032720 has 80 divisors (see below), whose sum is σ = 13897920. Its totient is φ = 1074816.

The previous prime is 4032703. The next prime is 4032727. The reversal of 4032720 is 272304.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a junction number, because it is equal to n+sod(n) for n = 4032693 and 4032702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4032727) 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, 1227 + ... + 3093.

It is an arithmetic number, because the mean of its divisors is an integer number (173724).

Almost surely, 2^4032720 is an apocalyptic number.

4032720 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 4032720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6948960).

4032720 is an abundant number, since it is smaller than the sum of its proper divisors (9865200).

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

4032720 is a wasteful number, since it uses less digits than its factorization.

4032720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889 (or 1877 counting only the distinct ones).

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

The square root of 4032720 is about 2008.1633399701. The cubic root of 4032720 is about 159.1717616977.

The spelling of 4032720 in words is "four million, thirty-two thousand, seven hundred twenty".