28980011 has 8 divisors (see below), whose sum is σ = 29470560. Its totient is φ = 28493568.

The previous prime is 28979983. The next prime is 28980013. The reversal of 28980011 is 11008982.

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

It is a cyclic number.

It is not a de Polignac number, because 28980011 - 2²² = 24785707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28980013) 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, 15305 + ... + 17093.

It is an arithmetic number, because the mean of its divisors is an integer number (3683820).

Almost surely, 2^28980011 is an apocalyptic number.

28980011 is a deficient number, since it is larger than the sum of its proper divisors (490549).

28980011 is a wasteful number, since it uses less digits than its factorization.

28980011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 28980011 is about 5383.3085551545. The cubic root of 28980011 is about 307.1610772163.

Adding to 28980011 its reverse (11008982), we get a palindrome (39988993).

The spelling of 28980011 in words is "twenty-eight million, nine hundred eighty thousand, eleven".