28847140 has 24 divisors (see below), whose sum is σ = 69233472. Its totient is φ = 9890400.

The previous prime is 28847123. The next prime is 28847153. The reversal of 28847140 is 4174882.

It is a junction number, because it is equal to n+sod(n) for n = 28847096 and 28847105.

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, 102886 + ... + 103165.

It is an arithmetic number, because the mean of its divisors is an integer number (2884728).

Almost surely, 2^28847140 is an apocalyptic number.

28847140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28847140 is an abundant number, since it is smaller than the sum of its proper divisors (40386332).

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

28847140 is a wasteful number, since it uses less digits than its factorization.

28847140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206067 (or 206065 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 28847140 is about 5370.9533604380. The cubic root of 28847140 is about 306.6909217320.

The spelling of 28847140 in words is "twenty-eight million, eight hundred forty-seven thousand, one hundred forty".