7403428 has 12 divisors (see below), whose sum is σ = 13090252. Its totient is φ = 3663360.

The previous prime is 7403423. The next prime is 7403453. The reversal of 7403428 is 8243047.

It can be written as a sum of positive squares in 2 ways, for example, as 2214144 + 5189284 = 1488^2 + 2278^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7403396 and 7403405.

It is not an unprimeable number, because it can be changed into a prime (7403423) 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, 9153 + ... + 9928.

Almost surely, 2^7403428 is an apocalyptic number.

It is an amenable number.

7403428 is a deficient number, since it is larger than the sum of its proper divisors (5686824).

7403428 is a wasteful number, since it uses less digits than its factorization.

7403428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19182 (or 19180 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 7403428 is about 2720.9241077252. The cubic root of 7403428 is about 194.8996020544.

The spelling of 7403428 in words is "seven million, four hundred three thousand, four hundred twenty-eight".