7428986 has 4 divisors (see below), whose sum is σ = 11143482. Its totient is φ = 3714492.

The previous prime is 7428937. The next prime is 7428997. The reversal of 7428986 is 6898247.

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

It can be written as a sum of positive squares in only one way, i.e., 5085025 + 2343961 = 2255^2 + 1531^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1857245 + ... + 1857248.

Almost surely, 2^7428986 is an apocalyptic number.

7428986 is a deficient number, since it is larger than the sum of its proper divisors (3714496).

7428986 is a wasteful number, since it uses less digits than its factorization.

7428986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714495.

The product of its digits is 193536, while the sum is 44.

The square root of 7428986 is about 2725.6166274808. The cubic root of 7428986 is about 195.1236209341.

The spelling of 7428986 in words is "seven million, four hundred twenty-eight thousand, nine hundred eighty-six".