28389002 has 16 divisors (see below), whose sum is σ = 44971200. Its totient is φ = 13403520.

The previous prime is 28388989. The next prime is 28389007. The reversal of 28389002 is 20098382.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28389002.

It is not an unprimeable number, because it can be changed into a prime (28389007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12602 + ... + 14682.

It is an arithmetic number, because the mean of its divisors is an integer number (2810700).

Almost surely, 2^28389002 is an apocalyptic number.

28389002 is a deficient number, since it is larger than the sum of its proper divisors (16582198).

28389002 is a wasteful number, since it uses less digits than its factorization.

28389002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28389002 is about 5328.1330689088. The cubic root of 28389002 is about 305.0586718625.

The spelling of 28389002 in words is "twenty-eight million, three hundred eighty-nine thousand, two".