28934847 has 8 divisors (see below), whose sum is σ = 42866480. Its totient is φ = 19289880.

The previous prime is 28934831. The next prime is 28934869. The reversal of 28934847 is 74843982.

It is not a de Polignac number, because 28934847 - 2⁴ = 28934831 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 (28934747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535804 + ... + 535857.

It is an arithmetic number, because the mean of its divisors is an integer number (5358310).

Almost surely, 2^28934847 is an apocalyptic number.

28934847 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28934847 is a deficient number, since it is larger than the sum of its proper divisors (13931633).

28934847 is a wasteful number, since it uses less digits than its factorization.

28934847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071670 (or 1071664 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 28934847 is about 5379.1121014532. The cubic root of 28934847 is about 307.0014288326.

The spelling of 28934847 in words is "twenty-eight million, nine hundred thirty-four thousand, eight hundred forty-seven".