28947000 has 64 divisors (see below), whose sum is σ = 90324000. Its totient is φ = 7718400.

The previous prime is 28946999. The next prime is 28947029. The reversal of 28947000 is 74982.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 1825 + ... + 7824.

Almost surely, 2^28947000 is an apocalyptic number.

28947000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28947000 is an abundant number, since it is smaller than the sum of its proper divisors (61377000).

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

28947000 is a wasteful number, since it uses less digits than its factorization.

28947000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9673 (or 9659 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 28947000 is about 5380.2416302616. The cubic root of 28947000 is about 307.0444043047.

The spelling of 28947000 in words is "twenty-eight million, nine hundred forty-seven thousand".