28064349 has 24 divisors (see below), whose sum is σ = 42885440. Its totient is φ = 17635968.

The previous prime is 28064317. The next prime is 28064359. The reversal of 28064349 is 94346082.

It is a happy number.

28064349 is a `hidden beast` number, since 2 + 8 + 0 + 643 + 4 + 9 = 666.

It is not a de Polignac number, because 28064349 - 2⁵ = 28064317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57384 + ... + 57870.

Almost surely, 2^28064349 is an apocalyptic number.

It is an amenable number.

28064349 is a deficient number, since it is larger than the sum of its proper divisors (14821091).

28064349 is a wasteful number, since it uses less digits than its factorization.

28064349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 28064349 is about 5297.5795416397. The cubic root of 28064349 is about 303.8913400035.

The spelling of 28064349 in words is "twenty-eight million, sixty-four thousand, three hundred forty-nine".