4000722 has 16 divisors (see below), whose sum is σ = 8728992. Its totient is φ = 1212320.

The previous prime is 4000709. The next prime is 4000723. The reversal of 4000722 is 2270004.

It is not an unprimeable number, because it can be changed into a prime (4000723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30243 + ... + 30374.

It is an arithmetic number, because the mean of its divisors is an integer number (545562).

Almost surely, 2^4000722 is an apocalyptic number.

4000722 is an abundant number, since it is smaller than the sum of its proper divisors (4728270).

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

4000722 is a wasteful number, since it uses less digits than its factorization.

4000722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60633.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 4000722 is about 2000.1804918557. The cubic root of 4000722 is about 158.7496554852.

Adding to 4000722 its reverse (2270004), we get a palindrome (6270726).

The spelling of 4000722 in words is "four million, seven hundred twenty-two", and thus it is an aban number.