28938776 has 8 divisors (see below), whose sum is σ = 54260220. Its totient is φ = 14469384.

The previous prime is 28938769. The next prime is 28938787. The reversal of 28938776 is 67783982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1808666 + ... + 1808681.

Almost surely, 2^28938776 is an apocalyptic number.

It is an amenable number.

28938776 is a deficient number, since it is larger than the sum of its proper divisors (25321444).

28938776 is a wasteful number, since it uses less digits than its factorization.

28938776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617353 (or 3617349 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 28938776 is about 5379.4772980281. The cubic root of 28938776 is about 307.0153238893.

The spelling of 28938776 in words is "twenty-eight million, nine hundred thirty-eight thousand, seven hundred seventy-six".