28730449000 has 64 divisors (see below), whose sum is σ = 73341028800. Its totient is φ = 10447432000.

The previous prime is 28730448961. The next prime is 28730449061. The reversal of 28730449000 is 94403782.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294930 + ... + 1316929.

It is an arithmetic number, because the mean of its divisors is an integer number (1145953575).

Almost surely, 2^28730449000 is an apocalyptic number.

28730449000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28730449000 is an abundant number, since it is smaller than the sum of its proper divisors (44610579800).

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

28730449000 is a wasteful number, since it uses less digits than its factorization.

28730449000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611891 (or 2611877 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 28730449000 in words is "twenty-eight billion, seven hundred thirty million, four hundred forty-nine thousand".