28892722 has 8 divisors (see below), whose sum is σ = 43376256. Its totient is φ = 14433972.

The previous prime is 28892719. The next prime is 28892723. The reversal of 28892722 is 22729882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28892723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2938 + ... + 8149.

It is an arithmetic number, because the mean of its divisors is an integer number (5422032).

Almost surely, 2^28892722 is an apocalyptic number.

28892722 is a deficient number, since it is larger than the sum of its proper divisors (14483534).

28892722 is a wasteful number, since it uses less digits than its factorization.

28892722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12392.

The product of its digits is 64512, while the sum is 40.

The square root of 28892722 is about 5375.1950662278. The cubic root of 28892722 is about 306.8523730799.

The spelling of 28892722 in words is "twenty-eight million, eight hundred ninety-two thousand, seven hundred twenty-two".