28077741 has 6 divisors (see below), whose sum is σ = 40556750. Its totient is φ = 18718488.

The previous prime is 28077719. The next prime is 28077767. The reversal of 28077741 is 14777082.

It can be written as a sum of positive squares in only one way, i.e., 14791716 + 13286025 = 3846^2 + 3645^2 .

It is not a de Polignac number, because 28077741 - 2⁶ = 28077677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28077696 and 28077705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28077701) 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, 1559866 + ... + 1559883.

Almost surely, 2^28077741 is an apocalyptic number.

It is an amenable number.

28077741 is a deficient number, since it is larger than the sum of its proper divisors (12479009).

28077741 is a wasteful number, since it uses less digits than its factorization.

28077741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119755 (or 3119752 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 28077741 is about 5298.8433643579. The cubic root of 28077741 is about 303.9396701900.

The spelling of 28077741 in words is "twenty-eight million, seventy-seven thousand, seven hundred forty-one".