7431428 has 24 divisors (see below), whose sum is σ = 13353984. Its totient is φ = 3617600.

The previous prime is 7431427. The next prime is 7431449. The reversal of 7431428 is 8241347.

It is a super-2 number, since 2×7431428² = 110452244238368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7431428.

It is not an unprimeable number, because it can be changed into a prime (7431427) 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, 38813 + ... + 39003.

It is an arithmetic number, because the mean of its divisors is an integer number (556416).

Almost surely, 2^7431428 is an apocalyptic number.

It is an amenable number.

7431428 is a deficient number, since it is larger than the sum of its proper divisors (5922556).

7431428 is a wasteful number, since it uses less digits than its factorization.

7431428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 401 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 7431428 is about 2726.0645626984. The cubic root of 7431428 is about 195.1449984448.

The spelling of 7431428 in words is "seven million, four hundred thirty-one thousand, four hundred twenty-eight".