28026646 has 8 divisors (see below), whose sum is σ = 42175224. Its totient is φ = 13968240.

The previous prime is 28026643. The next prime is 28026679. The reversal of 28026646 is 64662082.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28026641) 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, 21760 + ... + 23011.

It is an arithmetic number, because the mean of its divisors is an integer number (5271903).

Almost surely, 2^28026646 is an apocalyptic number.

28026646 is a deficient number, since it is larger than the sum of its proper divisors (14148578).

28026646 is a wasteful number, since it uses less digits than its factorization.

28026646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45086.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 28026646 is about 5294.0198337369. The cubic root of 28026646 is about 303.7551915882.

The spelling of 28026646 in words is "twenty-eight million, twenty-six thousand, six hundred forty-six".