28266741 has 6 divisors (see below), whose sum is σ = 40829750. Its totient is φ = 18844488.

The previous prime is 28266731. The next prime is 28266743. The reversal of 28266741 is 14766282.

It can be written as a sum of positive squares in only one way, i.e., 26563716 + 1703025 = 5154^2 + 1305^2 .

It is not a de Polignac number, because 28266741 - 2¹⁰ = 28265717 is a prime.

It is a super-2 number, since 2×28266741² = 1598017293522162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28266696 and 28266705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28266743) 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, 1570366 + ... + 1570383.

Almost surely, 2^28266741 is an apocalyptic number.

It is an amenable number.

28266741 is a deficient number, since it is larger than the sum of its proper divisors (12563009).

28266741 is a wasteful number, since it uses less digits than its factorization.

28266741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140755 (or 3140752 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 28266741 is about 5316.6475339259. The cubic root of 28266741 is about 304.6201164913.

The spelling of 28266741 in words is "twenty-eight million, two hundred sixty-six thousand, seven hundred forty-one".