28700049 has 32 divisors (see below), whose sum is σ = 46013440. Its totient is φ = 15567552.

The previous prime is 28699997. The next prime is 28700081. The reversal of 28700049 is 94000782.

It is not a de Polignac number, because 28700049 - 2⁸ = 28699793 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28699989 and 28700025.

It is not an unprimeable number, because it can be changed into a prime (28700099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32982 + ... + 33840.

It is an arithmetic number, because the mean of its divisors is an integer number (1437920).

Almost surely, 2^28700049 is an apocalyptic number.

It is an amenable number.

28700049 is a deficient number, since it is larger than the sum of its proper divisors (17313391).

28700049 is a wasteful number, since it uses less digits than its factorization.

28700049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 28700049 is about 5357.2426676416. The cubic root of 28700049 is about 306.1687629036.

The spelling of 28700049 in words is "twenty-eight million, seven hundred thousand, forty-nine".