28486222 has 4 divisors (see below), whose sum is σ = 42729336. Its totient is φ = 14243110.

The previous prime is 28486219. The next prime is 28486231. The reversal of 28486222 is 22268482.

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

It is a super-2 number, since 2×28486222² = 1622929687666568, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 7121554 + ... + 7121557.

It is an arithmetic number, because the mean of its divisors is an integer number (10682334).

Almost surely, 2^28486222 is an apocalyptic number.

28486222 is a deficient number, since it is larger than the sum of its proper divisors (14243114).

28486222 is a wasteful number, since it uses less digits than its factorization.

28486222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14243113.

The product of its digits is 24576, while the sum is 34.

The square root of 28486222 is about 5337.2485420861. The cubic root of 28486222 is about 305.4065062493.

The spelling of 28486222 in words is "twenty-eight million, four hundred eighty-six thousand, two hundred twenty-two".