28804469890 has 32 divisors (see below), whose sum is σ = 59298015744. Its totient is φ = 9868633920.

The previous prime is 28804469807. The next prime is 28804469891. The reversal of 28804469890 is 9896440882.

It is a super-2 number, since 2×28804469890² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28804469891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52314 + ... + 245653.

It is an arithmetic number, because the mean of its divisors is an integer number (1853062992).

Almost surely, 2^28804469890 is an apocalyptic number.

28804469890 is an abundant number, since it is smaller than the sum of its proper divisors (30493545854).

28804469890 is a wasteful number, since it uses less digits than its factorization.

28804469890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299362.

The product of its (nonzero) digits is 7962624, while the sum is 58.

The spelling of 28804469890 in words is "twenty-eight billion, eight hundred four million, four hundred sixty-nine thousand, eight hundred ninety".