28776341 has 6 divisors (see below), whose sum is σ = 31630326. Its totient is φ = 26160200.

The previous prime is 28776329. The next prime is 28776347. The reversal of 28776341 is 14367782.

It can be written as a sum of positive squares in only one way, i.e., 18879025 + 9897316 = 4345^2 + 3146^2 .

It is not a de Polignac number, because 28776341 - 2¹⁴ = 28759957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28776295 and 28776304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28776347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118790 + ... + 119031.

It is an arithmetic number, because the mean of its divisors is an integer number (5271721).

Almost surely, 2^28776341 is an apocalyptic number.

It is an amenable number.

28776341 is a deficient number, since it is larger than the sum of its proper divisors (2853985).

28776341 is a wasteful number, since it uses less digits than its factorization.

28776341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237843 (or 237832 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 28776341 is about 5364.3583959314. The cubic root of 28776341 is about 306.4398142458.

The spelling of 28776341 in words is "twenty-eight million, seven hundred seventy-six thousand, three hundred forty-one".