28655049 has 4 divisors (see below), whose sum is σ = 38206736. Its totient is φ = 19103364.

The previous prime is 28655041. The next prime is 28655051. The reversal of 28655049 is 94055682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28655049 - 2³ = 28655041 is a prime.

It is a super-2 number, since 2×28655049² = 1642223666384802, 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 = 28654998 and 28655016.

It is not an unprimeable number, because it can be changed into a prime (28655041) 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, 4775839 + ... + 4775844.

It is an arithmetic number, because the mean of its divisors is an integer number (9551684).

Almost surely, 2^28655049 is an apocalyptic number.

It is an amenable number.

28655049 is a deficient number, since it is larger than the sum of its proper divisors (9551687).

28655049 is an equidigital number, since it uses as much as digits as its factorization.

28655049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9551686.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 28655049 is about 5353.0410982917. The cubic root of 28655049 is about 306.0086609535.

The spelling of 28655049 in words is "twenty-eight million, six hundred fifty-five thousand, forty-nine".