28197849480 has 64 divisors (see below), whose sum is σ = 86879874240. Its totient is φ = 7316197632.

The previous prime is 28197849469. The next prime is 28197849499. The reversal of 28197849480 is 8494879182.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3170994 + ... + 3179873.

It is an arithmetic number, because the mean of its divisors is an integer number (1357498035).

Almost surely, 2^28197849480 is an apocalyptic number.

28197849480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28197849480 is an abundant number, since it is smaller than the sum of its proper divisors (58682024760).

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

28197849480 is a wasteful number, since it uses less digits than its factorization.

28197849480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6350918 (or 6350914 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 60.

The spelling of 28197849480 in words is "twenty-eight billion, one hundred ninety-seven million, eight hundred forty-nine thousand, four hundred eighty".