28850004 has 36 divisors (see below), whose sum is σ = 76099296. Its totient is φ = 9198288.

The previous prime is 28849987. The next prime is 28850009. The reversal of 28850004 is 40005882.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28850004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28850009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16594 + ... + 18249.

Almost surely, 2^28850004 is an apocalyptic number.

It is an amenable number.

28850004 is an abundant number, since it is smaller than the sum of its proper divisors (47249292).

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

28850004 is a wasteful number, since it uses less digits than its factorization.

28850004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34876 (or 34871 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 28850004 is about 5371.2199731532. The cubic root of 28850004 is about 306.7010710193.

Adding to 28850004 its reverse (40005882), we get a palindrome (68855886).

The spelling of 28850004 in words is "twenty-eight million, eight hundred fifty thousand, four".