28511049 has 8 divisors (see below), whose sum is σ = 43445440. Its totient is φ = 16292016.

The previous prime is 28511047. The next prime is 28511071. The reversal of 28511049 is 94011582.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28511049 - 2¹ = 28511047 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28511047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678814 + ... + 678855.

It is an arithmetic number, because the mean of its divisors is an integer number (5430680).

Almost surely, 2^28511049 is an apocalyptic number.

It is an amenable number.

28511049 is a deficient number, since it is larger than the sum of its proper divisors (14934391).

28511049 is a wasteful number, since it uses less digits than its factorization.

28511049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357679.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 28511049 is about 5339.5738594011. The cubic root of 28511049 is about 305.4952055699.

The spelling of 28511049 in words is "twenty-eight million, five hundred eleven thousand, forty-nine".