28340906 has 16 divisors (see below), whose sum is σ = 47364480. Its totient is φ = 12607680.

The previous prime is 28340861. The next prime is 28340911. The reversal of 28340906 is 60904382.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12671 + ... + 14738.

It is an arithmetic number, because the mean of its divisors is an integer number (2960280).

Almost surely, 2^28340906 is an apocalyptic number.

28340906 is a deficient number, since it is larger than the sum of its proper divisors (19023574).

28340906 is a wasteful number, since it uses less digits than its factorization.

28340906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27469.

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

The square root of 28340906 is about 5323.6177548731. The cubic root of 28340906 is about 304.8863000005.

The spelling of 28340906 in words is "twenty-eight million, three hundred forty thousand, nine hundred six".