28261670 has 8 divisors (see below), whose sum is σ = 50871024. Its totient is φ = 11304664.

The previous prime is 28261657. The next prime is 28261693. The reversal of 28261670 is 7616282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1413074 + ... + 1413093.

It is an arithmetic number, because the mean of its divisors is an integer number (6358878).

Almost surely, 2^28261670 is an apocalyptic number.

28261670 is a deficient number, since it is larger than the sum of its proper divisors (22609354).

28261670 is a wasteful number, since it uses less digits than its factorization.

28261670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826174.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28261670 is about 5316.1706142674. The cubic root of 28261670 is about 304.6018993105.

The spelling of 28261670 in words is "twenty-eight million, two hundred sixty-one thousand, six hundred seventy".