28046913 has 16 divisors (see below), whose sum is σ = 39177216. Its totient is φ = 17813840.

The previous prime is 28046903. The next prime is 28046927. The reversal of 28046913 is 31964082.

It is a cyclic number.

It is not a de Polignac number, because 28046913 - 2⁴ = 28046897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28046903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20806 + ... + 22112.

It is an arithmetic number, because the mean of its divisors is an integer number (2448576).

Almost surely, 2^28046913 is an apocalyptic number.

28046913 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28046913 is a deficient number, since it is larger than the sum of its proper divisors (11130303).

28046913 is a wasteful number, since it uses less digits than its factorization.

28046913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 28046913 is about 5295.9336287382. The cubic root of 28046913 is about 303.8283924408.

The spelling of 28046913 in words is "twenty-eight million, forty-six thousand, nine hundred thirteen".