28230022 has 4 divisors (see below), whose sum is σ = 42345036. Its totient is φ = 14115010.

The previous prime is 28230011. The next prime is 28230023. The reversal of 28230022 is 22003282.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28230023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7057504 + ... + 7057507.

It is an arithmetic number, because the mean of its divisors is an integer number (10586259).

Almost surely, 2^28230022 is an apocalyptic number.

28230022 is a deficient number, since it is larger than the sum of its proper divisors (14115014).

28230022 is a wasteful number, since it uses less digits than its factorization.

28230022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14115013.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 28230022 is about 5313.1932018326. The cubic root of 28230022 is about 304.4881570167.

The spelling of 28230022 in words is "twenty-eight million, two hundred thirty thousand, twenty-two".