28566002 has 4 divisors (see below), whose sum is σ = 42849006. Its totient is φ = 14283000.

The previous prime is 28565951. The next prime is 28566017. The reversal of 28566002 is 20066582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20066582 = 2 ⋅10033291.

It can be written as a sum of positive squares in only one way, i.e., 25110121 + 3455881 = 5011^2 + 1859^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7141499 + ... + 7141502.

Almost surely, 2^28566002 is an apocalyptic number.

28566002 is a deficient number, since it is larger than the sum of its proper divisors (14283004).

28566002 is a wasteful number, since it uses less digits than its factorization.

28566002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14283003.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28566002 is about 5344.7172048669. The cubic root of 28566002 is about 305.6913529624.

The spelling of 28566002 in words is "twenty-eight million, five hundred sixty-six thousand, two".