7890022 has 16 divisors (see below), whose sum is σ = 13570560. Its totient is φ = 3370248.

The previous prime is 7890013. The next prime is 7890041. The reversal of 7890022 is 2200987.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4563 + ... + 6049.

It is an arithmetic number, because the mean of its divisors is an integer number (848160).

Almost surely, 2^7890022 is an apocalyptic number.

7890022 is a deficient number, since it is larger than the sum of its proper divisors (5680538).

7890022 is a wasteful number, since it uses less digits than its factorization.

7890022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 7890022 is about 2808.9182971386. The cubic root of 7890022 is about 199.0792845865.

It can be divided in two parts, 78 and 90022, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 7890022 in words is "seven million, eight hundred ninety thousand, twenty-two".