28898011 has 8 divisors (see below), whose sum is σ = 30678480. Its totient is φ = 27126528.

The previous prime is 28897991. The next prime is 28898029. The reversal of 28898011 is 11089882.

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 28898011 - 2¹¹ = 28895963 is a prime.

It is a super-2 number, since 2×28898011² = 1670190079512242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28898041) 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, 5095 + ... + 9151.

It is an arithmetic number, because the mean of its divisors is an integer number (3834810).

Almost surely, 2^28898011 is an apocalyptic number.

28898011 is a deficient number, since it is larger than the sum of its proper divisors (1780469).

28898011 is a wasteful number, since it uses less digits than its factorization.

28898011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 28898011 is about 5375.6870258600. The cubic root of 28898011 is about 306.8710957093.

The spelling of 28898011 in words is "twenty-eight million, eight hundred ninety-eight thousand, eleven".