28236670 has 32 divisors (see below), whose sum is σ = 63369216. Its totient is φ = 8800800.

The previous prime is 28236647. The next prime is 28236673. The reversal of 28236670 is 7663282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28236673) 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, 17566 + ... + 19105.

It is an arithmetic number, because the mean of its divisors is an integer number (1980288).

Almost surely, 2^28236670 is an apocalyptic number.

28236670 is an abundant number, since it is smaller than the sum of its proper divisors (35132546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28236670 is a wasteful number, since it uses less digits than its factorization.

28236670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36696.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 28236670 is about 5313.8187774895. The cubic root of 28236670 is about 304.5120568492.

The spelling of 28236670 in words is "twenty-eight million, two hundred thirty-six thousand, six hundred seventy".