28577002 has 4 divisors (see below), whose sum is σ = 42865506. Its totient is φ = 14288500.

The previous prime is 28576993. The next prime is 28577023. The reversal of 28577002 is 20077582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26020201 + 2556801 = 5101^2 + 1599^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7144249 + ... + 7144252.

Almost surely, 2^28577002 is an apocalyptic number.

28577002 is a deficient number, since it is larger than the sum of its proper divisors (14288504).

28577002 is a wasteful number, since it uses less digits than its factorization.

28577002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288503.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 28577002 is about 5345.7461593308. The cubic root of 28577002 is about 305.7305857698.

The spelling of 28577002 in words is "twenty-eight million, five hundred seventy-seven thousand, two".