28854811 has 4 divisors (see below), whose sum is σ = 30109392. Its totient is φ = 27600232.

The previous prime is 28854809. The next prime is 28854821. The reversal of 28854811 is 11845882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11845882 = 2 ⋅5922941.

It is a cyclic number.

It is not a de Polignac number, because 28854811 - 2¹ = 28854809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28854821) 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, 627256 + ... + 627301.

It is an arithmetic number, because the mean of its divisors is an integer number (7527348).

Almost surely, 2^28854811 is an apocalyptic number.

28854811 is a deficient number, since it is larger than the sum of its proper divisors (1254581).

28854811 is a wasteful number, since it uses less digits than its factorization.

28854811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254580.

The product of its digits is 20480, while the sum is 37.

The square root of 28854811 is about 5371.6674319991. The cubic root of 28854811 is about 306.7181042945.

The spelling of 28854811 in words is "twenty-eight million, eight hundred fifty-four thousand, eight hundred eleven".