7428038 has 4 divisors (see below), whose sum is σ = 11142060. Its totient is φ = 3714018.

The previous prime is 7428037. The next prime is 7428049. The reversal of 7428038 is 8308247.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7427995 and 7428013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428037) 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 as a sum of consecutive naturals, namely, 1857008 + ... + 1857011.

It is an arithmetic number, because the mean of its divisors is an integer number (2785515).

Almost surely, 2^7428038 is an apocalyptic number.

7428038 is a deficient number, since it is larger than the sum of its proper divisors (3714022).

7428038 is a wasteful number, since it uses less digits than its factorization.

7428038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714021.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 7428038 is about 2725.4427163307. The cubic root of 7428038 is about 195.1153207856.

The spelling of 7428038 in words is "seven million, four hundred twenty-eight thousand, thirty-eight".