7828487 has 4 divisors (see below), whose sum is σ = 8168880. Its totient is φ = 7488096.

The previous prime is 7828453. The next prime is 7828501. The reversal of 7828487 is 7848287.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 7828487 - 2²⁰ = 6779911 is a prime.

It is a super-2 number, since 2×7828487² = 122570417418338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7828427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170162 + ... + 170207.

It is an arithmetic number, because the mean of its divisors is an integer number (2042220).

Almost surely, 2^7828487 is an apocalyptic number.

7828487 is a deficient number, since it is larger than the sum of its proper divisors (340393).

7828487 is a wasteful number, since it uses less digits than its factorization.

7828487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340392.

The product of its digits is 200704, while the sum is 44.

The square root of 7828487 is about 2797.9433518211. The cubic root of 7828487 is about 198.5603874415.

The spelling of 7828487 in words is "seven million, eight hundred twenty-eight thousand, four hundred eighty-seven".