28986901 has 2 divisors, whose sum is σ = 28986902. Its totient is φ = 28986900.

The previous prime is 28986889. The next prime is 28986911. The reversal of 28986901 is 10968982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19980900 + 9006001 = 4470^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 28986901 - 2¹⁷ = 28855829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28986911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14493450 + 14493451.

It is an arithmetic number, because the mean of its divisors is an integer number (14493451).

Almost surely, 2^28986901 is an apocalyptic number.

It is an amenable number.

28986901 is a deficient number, since it is larger than the sum of its proper divisors (1).

28986901 is an equidigital number, since it uses as much as digits as its factorization.

28986901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 28986901 is about 5383.9484581485. The cubic root of 28986901 is about 307.1854178112.

The spelling of 28986901 in words is "twenty-eight million, nine hundred eighty-six thousand, nine hundred one".