28349006 has 12 divisors (see below), whose sum is σ = 48632472. Its totient is φ = 12141036.

The previous prime is 28349003. The next prime is 28349021. The reversal of 28349006 is 60094382.

It is a super-2 number, since 2×28349006² = 1607332282376072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28349003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19211 + ... + 20633.

It is an arithmetic number, because the mean of its divisors is an integer number (4052706).

Almost surely, 2^28349006 is an apocalyptic number.

28349006 is a deficient number, since it is larger than the sum of its proper divisors (20283466).

28349006 is an frugal number, since it uses more digits than its factorization.

28349006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855 (or 1432 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 28349006 is about 5324.3784613793. The cubic root of 28349006 is about 304.9153433415.

The spelling of 28349006 in words is "twenty-eight million, three hundred forty-nine thousand, six".