28777376 has 24 divisors (see below), whose sum is σ = 57212064. Its totient is φ = 14247360.

The previous prime is 28777373. The next prime is 28777387. The reversal of 28777376 is 67377782.

It is a self number, because there is not a number n which added to its sum of digits gives 28777376.

It is not an unprimeable number, because it can be changed into a prime (28777373) 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 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 7661.

It is an arithmetic number, because the mean of its divisors is an integer number (2383836).

Almost surely, 2^28777376 is an apocalyptic number.

It is an amenable number.

28777376 is a deficient number, since it is larger than the sum of its proper divisors (28434688).

28777376 is a wasteful number, since it uses less digits than its factorization.

28777376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8844 (or 8836 counting only the distinct ones).

The product of its digits is 691488, while the sum is 47.

The square root of 28777376 is about 5364.4548651284. The cubic root of 28777376 is about 306.4434881134.

The spelling of 28777376 in words is "twenty-eight million, seven hundred seventy-seven thousand, three hundred seventy-six".