28064970 has 48 divisors (see below), whose sum is σ = 73382400. Its totient is φ = 7441632.

The previous prime is 28064963. The next prime is 28064989. The reversal of 28064970 is 7946082.

28064970 is a `hidden beast` number, since 2 + 8 + 0 + 649 + 7 + 0 = 666.

It is a super-2 number, since 2×28064970² = 1575285082201800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17127 + ... + 18693.

It is an arithmetic number, because the mean of its divisors is an integer number (1528800).

Almost surely, 2^28064970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28064970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36691200).

28064970 is an abundant number, since it is smaller than the sum of its proper divisors (45317430).

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

28064970 is a wasteful number, since it uses less digits than its factorization.

28064970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 28064970 is about 5297.6381529886. The cubic root of 28064970 is about 303.8935814610.

It can be divided in two parts, 2806 and 4970, that added together give a 5-th power (7776 = 6⁵).

The spelling of 28064970 in words is "twenty-eight million, sixty-four thousand, nine hundred seventy".