7028387 has 4 divisors (see below), whose sum is σ = 7034880. Its totient is φ = 7021896.

The previous prime is 7028381. The next prime is 7028389. The reversal of 7028387 is 7838207.

It is a happy number.

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 7028387 - 2⁶ = 7028323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7028381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187 + ... + 3932.

It is an arithmetic number, because the mean of its divisors is an integer number (1758720).

Almost surely, 2^7028387 is an apocalyptic number.

7028387 is a deficient number, since it is larger than the sum of its proper divisors (6493).

7028387 is a wasteful number, since it uses less digits than its factorization.

7028387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 7028387 is about 2651.1105220266. The cubic root of 7028387 is about 191.5513522702.

The spelling of 7028387 in words is "seven million, twenty-eight thousand, three hundred eighty-seven".