28547992 has 32 divisors (see below), whose sum is σ = 58611600. Its totient is φ = 12928000.

The previous prime is 28547989. The next prime is 28547999. The reversal of 28547992 is 29974582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28547999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34884 + ... + 35692.

Almost surely, 2^28547992 is an apocalyptic number.

28547992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28547992 is an abundant number, since it is smaller than the sum of its proper divisors (30063608).

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

28547992 is a wasteful number, since it uses less digits than its factorization.

28547992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1223 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 28547992 is about 5343.0320979758. The cubic root of 28547992 is about 305.6270964068.

The spelling of 28547992 in words is "twenty-eight million, five hundred forty-seven thousand, nine hundred ninety-two".