28900002 has 16 divisors (see below), whose sum is σ = 57919680. Its totient is φ = 9613392.

The previous prime is 28899973. The next prime is 28900057. The reversal of 28900002 is 20000982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (3619980).

Almost surely, 2^28900002 is an apocalyptic number.

28900002 is an abundant number, since it is smaller than the sum of its proper divisors (29019678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28900002 is a wasteful number, since it uses less digits than its factorization.

28900002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9977.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 28900002 is about 5375.8722083026. The cubic root of 28900002 is about 306.8781430954.

Adding to 28900002 its reverse (20000982), we get a palindrome (48900984).

The spelling of 28900002 in words is "twenty-eight million, nine hundred thousand, two".