28350002 has 4 divisors (see below), whose sum is σ = 42525006. Its totient is φ = 14175000.

The previous prime is 28349989. The next prime is 28350013. The reversal of 28350002 is 20005382.

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., 27888961 + 461041 = 5281^2 + 679^2 .

It is a super-2 number, since 2×28350002² = 1607445226800008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7087499 + ... + 7087502.

Almost surely, 2^28350002 is an apocalyptic number.

28350002 is a deficient number, since it is larger than the sum of its proper divisors (14175004).

28350002 is a wasteful number, since it uses less digits than its factorization.

28350002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14175003.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 28350002 is about 5324.4719926017. The cubic root of 28350002 is about 304.9189142148.

Adding to 28350002 its reverse (20005382), we get a palindrome (48355384).

The spelling of 28350002 in words is "twenty-eight million, three hundred fifty thousand, two".