7028885 has 8 divisors (see below), whose sum is σ = 8458296. Its totient is φ = 5607360.

The previous prime is 7028881. The next prime is 7028887. The reversal of 7028885 is 5888207.

It can be written as a sum of positive squares in 4 ways, for example, as 908209 + 6120676 = 953^2 + 2474^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7028885 - 2² = 7028881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7028881) 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, 215 + ... + 3755.

It is an arithmetic number, because the mean of its divisors is an integer number (1057287).

Almost surely, 2^7028885 is an apocalyptic number.

It is an amenable number.

7028885 is a deficient number, since it is larger than the sum of its proper divisors (1429411).

7028885 is a wasteful number, since it uses less digits than its factorization.

7028885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943.

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 7028885 is about 2651.2044432672. The cubic root of 7028885 is about 191.5558763201. Note that the first 3 decimals are identical.

The spelling of 7028885 in words is "seven million, twenty-eight thousand, eight hundred eighty-five".