28017670 has 8 divisors (see below), whose sum is σ = 50431824. Its totient is φ = 11207064.

The previous prime is 28017643. The next prime is 28017677. The reversal of 28017670 is 7671082.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28017677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400874 + ... + 1400893.

It is an arithmetic number, because the mean of its divisors is an integer number (6303978).

Almost surely, 2^28017670 is an apocalyptic number.

28017670 is a deficient number, since it is larger than the sum of its proper divisors (22414154).

28017670 is a wasteful number, since it uses less digits than its factorization.

28017670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801774.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 28017670 is about 5293.1720168534. The cubic root of 28017670 is about 303.7227605733.

The spelling of 28017670 in words is "twenty-eight million, seventeen thousand, six hundred seventy".