28418633 has 2 divisors, whose sum is σ = 28418634. Its totient is φ = 28418632.

The previous prime is 28418603. The next prime is 28418641. The reversal of 28418633 is 33681482.

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., 23454649 + 4963984 = 4843^2 + 2228^2 .

It is a cyclic number.

It is not a de Polignac number, because 28418633 - 2⁶ = 28418569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_1765817 and since 28418633 and 1765817 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 28418593 and 28418602.

It is not a weakly prime, because it can be changed into another prime (28418603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14209316 + 14209317.

It is an arithmetic number, because the mean of its divisors is an integer number (14209317).

Almost surely, 2^28418633 is an apocalyptic number.

It is an amenable number.

28418633 is a deficient number, since it is larger than the sum of its proper divisors (1).

28418633 is an equidigital number, since it uses as much as digits as its factorization.

28418633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 28418633 is about 5330.9129612103. The cubic root of 28418633 is about 305.1647698794.

The spelling of 28418633 in words is "twenty-eight million, four hundred eighteen thousand, six hundred thirty-three".