7886742 has 32 divisors (see below), whose sum is σ = 16837632. Its totient is φ = 2454144.

The previous prime is 7886731. The next prime is 7886777. The reversal of 7886742 is 2476887.

It is a junction number, because it is equal to n+sod(n) for n = 7886694 and 7886703.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16803 + ... + 17265.

It is an arithmetic number, because the mean of its divisors is an integer number (526176).

Almost surely, 2^7886742 is an apocalyptic number.

7886742 is an abundant number, since it is smaller than the sum of its proper divisors (8950890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7886742 is a wasteful number, since it uses less digits than its factorization.

7886742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 150528, while the sum is 42.

The square root of 7886742 is about 2808.3343818000. The cubic root of 7886742 is about 199.0516940188.

The spelling of 7886742 in words is "seven million, eight hundred eighty-six thousand, seven hundred forty-two".