28662049 has 4 divisors (see below), whose sum is σ = 30866836. Its totient is φ = 26457264.

The previous prime is 28662047. The next prime is 28662059. The reversal of 28662049 is 94026682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94026682 = 2 ⋅47013341.

It can be written as a sum of positive squares in 2 ways, for example, as 9363600 + 19298449 = 3060^2 + 4393^2 .

It is a cyclic number.

It is not a de Polignac number, because 28662049 - 2¹ = 28662047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28661999 and 28662017.

It is not an unprimeable number, because it can be changed into a prime (28662047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102374 + ... + 1102399.

It is an arithmetic number, because the mean of its divisors is an integer number (7716709).

Almost surely, 2^28662049 is an apocalyptic number.

It is an amenable number.

28662049 is a deficient number, since it is larger than the sum of its proper divisors (2204787).

28662049 is a wasteful number, since it uses less digits than its factorization.

28662049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204786.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 28662049 is about 5353.6948923150. The cubic root of 28662049 is about 306.0335767049.

The spelling of 28662049 in words is "twenty-eight million, six hundred sixty-two thousand, forty-nine".