28733422 has 4 divisors (see below), whose sum is σ = 43100136. Its totient is φ = 14366710.

The previous prime is 28733407. The next prime is 28733429. The reversal of 28733422 is 22433782.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28733429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7183354 + ... + 7183357.

It is an arithmetic number, because the mean of its divisors is an integer number (10775034).

Almost surely, 2^28733422 is an apocalyptic number.

28733422 is a deficient number, since it is larger than the sum of its proper divisors (14366714).

28733422 is a wasteful number, since it uses less digits than its factorization.

28733422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14366713.

The product of its digits is 16128, while the sum is 31.

The square root of 28733422 is about 5360.3565179939. The cubic root of 28733422 is about 306.2873900205.

The spelling of 28733422 in words is "twenty-eight million, seven hundred thirty-three thousand, four hundred twenty-two".