28670733 has 48 divisors (see below), whose sum is σ = 53242560. Its totient is φ = 15113952.

The previous prime is 28670731. The next prime is 28670777. The reversal of 28670733 is 33707682.

It is not a de Polignac number, because 28670733 - 2¹ = 28670731 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28670731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16366 + ... + 18032.

It is an arithmetic number, because the mean of its divisors is an integer number (1109220).

Almost surely, 2^28670733 is an apocalyptic number.

It is an amenable number.

28670733 is a deficient number, since it is larger than the sum of its proper divisors (24571827).

28670733 is a wasteful number, since it uses less digits than its factorization.

28670733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 28670733 is about 5354.5058595542. The cubic root of 28670733 is about 306.0644808368.

It can be divided in two parts, 28670 and 733, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 28670733 in words is "twenty-eight million, six hundred seventy thousand, seven hundred thirty-three".