7925878 has 4 divisors (see below), whose sum is σ = 11888820. Its totient is φ = 3962938.

The previous prime is 7925873. The next prime is 7925891. The reversal of 7925878 is 8785297.

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

It is an Ulam number.

It is a d-powerful number, because it can be written as 7⁵ + 9⁵ + 2¹⁷ + 5⁹ + 8³ + 7⁸ + 8³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7925873) 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 as a sum of consecutive naturals, namely, 1981468 + ... + 1981471.

It is an arithmetic number, because the mean of its divisors is an integer number (2972205).

Almost surely, 2^7925878 is an apocalyptic number.

7925878 is a deficient number, since it is larger than the sum of its proper divisors (3962942).

7925878 is a wasteful number, since it uses less digits than its factorization.

7925878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962941.

The product of its digits is 282240, while the sum is 46.

The square root of 7925878 is about 2815.2935903738. The cubic root of 7925878 is about 199.3803991227.

It can be divided in two parts, 792 and 5878, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 7925878 in words is "seven million, nine hundred twenty-five thousand, eight hundred seventy-eight".