28478461600 has 72 divisors (see below), whose sum is σ = 73182191040. Its totient is φ = 10791832320.

The previous prime is 28478461597. The next prime is 28478461607. The reversal of 28478461600 is 616487482.

It is a super-2 number, since 2×28478461600² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28478461607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921592 + ... + 951991.

It is an arithmetic number, because the mean of its divisors is an integer number (1016419320).

Almost surely, 2^28478461600 is an apocalyptic number.

28478461600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28478461600 is an abundant number, since it is smaller than the sum of its proper divisors (44703729440).

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

28478461600 is a wasteful number, since it uses less digits than its factorization.

28478461600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873622 (or 1873609 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 28478461600 in words is "twenty-eight billion, four hundred seventy-eight million, four hundred sixty-one thousand, six hundred".