28930570 has 8 divisors (see below), whose sum is σ = 52075044. Its totient is φ = 11572224.

The previous prime is 28930567. The next prime is 28930571. The reversal of 28930570 is 7503982.

It can be written as a sum of positive squares in 2 ways, for example, as 27217089 + 1713481 = 5217^2 + 1309^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28930571) 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, 1446519 + ... + 1446538.

Almost surely, 2^28930570 is an apocalyptic number.

28930570 is a deficient number, since it is larger than the sum of its proper divisors (23144474).

28930570 is a wasteful number, since it uses less digits than its factorization.

28930570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893064.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 28930570 is about 5378.7145304431. The cubic root of 28930570 is about 306.9863016307.

The spelling of 28930570 in words is "twenty-eight million, nine hundred thirty thousand, five hundred seventy".