28238776 has 16 divisors (see below), whose sum is σ = 53024400. Its totient is φ = 14098944.

The previous prime is 28238773. The next prime is 28238797. The reversal of 28238776 is 67783282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28238773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4440 + ... + 8728.

It is an arithmetic number, because the mean of its divisors is an integer number (3314025).

Almost surely, 2^28238776 is an apocalyptic number.

It is an amenable number.

28238776 is a deficient number, since it is larger than the sum of its proper divisors (24785624).

28238776 is a wasteful number, since it uses less digits than its factorization.

28238776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118 (or 5114 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 28238776 is about 5314.0169363674. The cubic root of 28238776 is about 304.5196272231.

The spelling of 28238776 in words is "twenty-eight million, two hundred thirty-eight thousand, seven hundred seventy-six".