28012892 has 6 divisors (see below), whose sum is σ = 49022568. Its totient is φ = 14006444.

The previous prime is 28012879. The next prime is 28012903. The reversal of 28012892 is 29821082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3501608 + ... + 3501615.

It is an arithmetic number, because the mean of its divisors is an integer number (8170428).

Almost surely, 2^28012892 is an apocalyptic number.

It is an amenable number.

28012892 is a deficient number, since it is larger than the sum of its proper divisors (21009676).

28012892 is a wasteful number, since it uses less digits than its factorization.

28012892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7003227 (or 7003225 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 28012892 is about 5292.7206614368. The cubic root of 28012892 is about 303.7054944475.

The spelling of 28012892 in words is "twenty-eight million, twelve thousand, eight hundred ninety-two".