7826428 has 12 divisors (see below), whose sum is σ = 13724032. Its totient is φ = 3905280.

The previous prime is 7826419. The next prime is 7826437. The reversal of 7826428 is 8246287.

It is an interprime number because it is at equal distance from previous prime (7826419) and next prime (7826437).

It is a super-2 number, since 2×7826428² = 122505950478368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613 + ... + 4003.

Almost surely, 2^7826428 is an apocalyptic number.

It is an amenable number.

7826428 is a deficient number, since it is larger than the sum of its proper divisors (5897604).

7826428 is a wasteful number, since it uses less digits than its factorization.

7826428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972 (or 3970 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 7826428 is about 2797.5753787879. The cubic root of 7826428 is about 198.5429778754.

The spelling of 7826428 in words is "seven million, eight hundred twenty-six thousand, four hundred twenty-eight".