7428868 has 6 divisors (see below), whose sum is σ = 13000526. Its totient is φ = 3714432.

The previous prime is 7428859. The next prime is 7428877. The reversal of 7428868 is 8688247.

It is an interprime number because it is at equal distance from previous prime (7428859) and next prime (7428877).

It can be written as a sum of positive squares in only one way, i.e., 4875264 + 2553604 = 2208^2 + 1598^2 .

It is a super-2 number, since 2×7428868² = 110376159522848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 928605 + ... + 928612.

Almost surely, 2^7428868 is an apocalyptic number.

It is an amenable number.

7428868 is a deficient number, since it is larger than the sum of its proper divisors (5571658).

7428868 is a wasteful number, since it uses less digits than its factorization.

7428868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857221 (or 1857219 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 7428868 is about 2725.5949809170. The cubic root of 7428868 is about 195.1225878318.

The spelling of 7428868 in words is "seven million, four hundred twenty-eight thousand, eight hundred sixty-eight".