28622122 has 4 divisors (see below), whose sum is σ = 42933186. Its totient is φ = 14311060.

The previous prime is 28622119. The next prime is 28622123. The reversal of 28622122 is 22122682.

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

It can be written as a sum of positive squares in only one way, i.e., 19018321 + 9603801 = 4361^2 + 3099^2 .

It is not an unprimeable number, because it can be changed into a prime (28622123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7155529 + ... + 7155532.

Almost surely, 2^28622122 is an apocalyptic number.

28622122 is a deficient number, since it is larger than the sum of its proper divisors (14311064).

28622122 is a wasteful number, since it uses less digits than its factorization.

28622122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14311063.

The product of its digits is 1536, while the sum is 25.

The square root of 28622122 is about 5349.9646727806. The cubic root of 28622122 is about 305.8914063526.

The spelling of 28622122 in words is "twenty-eight million, six hundred twenty-two thousand, one hundred twenty-two".