28870546 has 8 divisors (see below), whose sum is σ = 43328844. Its totient is φ = 14427600.

The previous prime is 28870511. The next prime is 28870553. The reversal of 28870546 is 64507882.

It can be written as a sum of positive squares in 2 ways, for example, as 28462225 + 408321 = 5335^2 + 639^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28870499 and 28870508.

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, 4416 + ... + 8788.

Almost surely, 2^28870546 is an apocalyptic number.

28870546 is a deficient number, since it is larger than the sum of its proper divisors (14458298).

28870546 is a wasteful number, since it uses less digits than its factorization.

28870546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 28870546 is about 5373.1318614008. The cubic root of 28870546 is about 306.7738469616.

The spelling of 28870546 in words is "twenty-eight million, eight hundred seventy thousand, five hundred forty-six".