7428331 has 4 divisors (see below), whose sum is σ = 7434472. Its totient is φ = 7422192.

The previous prime is 7428307. The next prime is 7428341. The reversal of 7428331 is 1338247.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7428331 - 2⁷ = 7428203 is a prime.

It is a super-2 number, since 2×7428331² = 110360202891122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7428331.

It is not an unprimeable number, because it can be changed into a prime (7428301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585 + ... + 3898.

It is an arithmetic number, because the mean of its divisors is an integer number (1858618).

Almost surely, 2^7428331 is an apocalyptic number.

7428331 is a deficient number, since it is larger than the sum of its proper divisors (6141).

7428331 is a wasteful number, since it uses less digits than its factorization.

7428331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140.

The product of its digits is 4032, while the sum is 28.

The square root of 7428331 is about 2725.4964685356. The cubic root of 7428331 is about 195.1178862023.

The spelling of 7428331 in words is "seven million, four hundred twenty-eight thousand, three hundred thirty-one".