4326721 has 16 divisors (see below), whose sum is σ = 5301504. Its totient is φ = 3446784.

The previous prime is 4326719. The next prime is 4326727. The reversal of 4326721 is 1276234.

It is not a de Polignac number, because 4326721 - 2¹ = 4326719 is a prime.

It is a super-2 number, since 2×4326721² = 37441029223682, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4¹¹ + 3² + 2⁵ + 6⁴ + 7 + 2¹⁷ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4326727) 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, 12081 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (331344).

Almost surely, 2^4326721 is an apocalyptic number.

It is an amenable number.

4326721 is a deficient number, since it is larger than the sum of its proper divisors (974783).

4326721 is a wasteful number, since it uses less digits than its factorization.

4326721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its digits is 2016, while the sum is 25.

The square root of 4326721 is about 2080.0771620303. The cubic root of 4326721 is about 162.9494743472.

The spelling of 4326721 in words is "four million, three hundred twenty-six thousand, seven hundred twenty-one".