28028061 has 12 divisors (see below), whose sum is σ = 41791360. Its totient is φ = 18082440.

The previous prime is 28028057. The next prime is 28028069. The reversal of 28028061 is 16082082.

It is not a de Polignac number, because 28028061 - 2² = 28028057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28028069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49951 + ... + 50508.

Almost surely, 2^28028061 is an apocalyptic number.

It is an amenable number.

28028061 is a deficient number, since it is larger than the sum of its proper divisors (13763299).

28028061 is a wasteful number, since it uses less digits than its factorization.

28028061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100496 (or 100493 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 28028061 is about 5294.1534734082. The cubic root of 28028061 is about 303.7603034660.

The spelling of 28028061 in words is "twenty-eight million, twenty-eight thousand, sixty-one".