28171475248 has 40 divisors (see below), whose sum is σ = 62475385248. Its totient is φ = 12054968832.

The previous prime is 28171475221. The next prime is 28171475291. The reversal of 28171475248 is 84257417182.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119461 + ... + 265732.

Almost surely, 2^28171475248 is an apocalyptic number.

28171475248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28171475248 is an abundant number, since it is smaller than the sum of its proper divisors (34303910000).

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

28171475248 is a wasteful number, since it uses less digits than its factorization.

28171475248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385861 (or 385855 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 49.

The spelling of 28171475248 in words is "twenty-eight billion, one hundred seventy-one million, four hundred seventy-five thousand, two hundred forty-eight".