28898811 has 12 divisors (see below), whose sum is σ = 42427840. Its totient is φ = 18949680.

The previous prime is 28898803. The next prime is 28898839. The reversal of 28898811 is 11889882.

It is not a de Polignac number, because 28898811 - 2³ = 28898803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28898801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25771 + ... + 26868.

Almost surely, 2^28898811 is an apocalyptic number.

28898811 is a deficient number, since it is larger than the sum of its proper divisors (13529029).

28898811 is a wasteful number, since it uses less digits than its factorization.

28898811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52706 (or 52703 counting only the distinct ones).

The product of its digits is 73728, while the sum is 45.

The square root of 28898811 is about 5375.7614344388. The cubic root of 28898811 is about 306.8739274453.

It can be divided in two parts, 2889881 and 1, that added together give a palindrome (2889882).

The spelling of 28898811 in words is "twenty-eight million, eight hundred ninety-eight thousand, eight hundred eleven".