7428231 has 12 divisors (see below), whose sum is σ = 11020152. Its totient is φ = 4818096.

The previous prime is 7428227. The next prime is 7428271. The reversal of 7428231 is 1328247.

7428231 is a `hidden beast` number, since 7 + 428 + 231 = 666.

It is not a de Polignac number, because 7428231 - 2² = 7428227 is a prime.

It is a super-2 number, since 2×7428231² = 110357231578722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7428195 and 7428204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10821 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (918346).

Almost surely, 2^7428231 is an apocalyptic number.

7428231 is a deficient number, since it is larger than the sum of its proper divisors (3591921).

7428231 is a wasteful number, since it uses less digits than its factorization.

7428231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22350 (or 22347 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 7428231 is about 2725.4781231923. The cubic root of 7428231 is about 195.1170106410.

The spelling of 7428231 in words is "seven million, four hundred twenty-eight thousand, two hundred thirty-one".