28068957 has 16 divisors (see below), whose sum is σ = 47524480. Its totient is φ = 16039296.

The previous prime is 28068949. The next prime is 28068961. The reversal of 28068957 is 75986082.

It is not a de Polignac number, because 28068957 - 2³ = 28068949 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 (28068457) by changing a digit.

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, 74068 + ... + 74445.

It is an arithmetic number, because the mean of its divisors is an integer number (2970280).

Almost surely, 2^28068957 is an apocalyptic number.

28068957 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28068957 is a deficient number, since it is larger than the sum of its proper divisors (19455523).

28068957 is a wasteful number, since it uses less digits than its factorization.

28068957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148529 (or 148523 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 28068957 is about 5298.0144393914. The cubic root of 28068957 is about 303.9079714798.

The spelling of 28068957 in words is "twenty-eight million, sixty-eight thousand, nine hundred fifty-seven".