28422118 has 4 divisors (see below), whose sum is σ = 42633180. Its totient is φ = 14211058.

The previous prime is 28422109. The next prime is 28422127. The reversal of 28422118 is 81122482.

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

It is an interprime number because it is at equal distance from previous prime (28422109) and next prime (28422127).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7105528 + ... + 7105531.

It is an arithmetic number, because the mean of its divisors is an integer number (10658295).

Almost surely, 2^28422118 is an apocalyptic number.

28422118 is a deficient number, since it is larger than the sum of its proper divisors (14211062).

28422118 is a wasteful number, since it uses less digits than its factorization.

28422118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14211061.

The product of its digits is 2048, while the sum is 28.

The square root of 28422118 is about 5331.2398182787. The cubic root of 28422118 is about 305.1772435705.

The spelling of 28422118 in words is "twenty-eight million, four hundred twenty-two thousand, one hundred eighteen".