28233077 has 2 divisors, whose sum is σ = 28233078. Its totient is φ = 28233076.

The previous prime is 28233061. The next prime is 28233091. The reversal of 28233077 is 77033282.

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., 26275876 + 1957201 = 5126^2 + 1399^2 .

It is a cyclic number.

It is not a de Polignac number, because 28233077 - 2⁴ = 28233061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28233017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116538 + 14116539.

It is an arithmetic number, because the mean of its divisors is an integer number (14116539).

Almost surely, 2^28233077 is an apocalyptic number.

It is an amenable number.

28233077 is a deficient number, since it is larger than the sum of its proper divisors (1).

28233077 is an equidigital number, since it uses as much as digits as its factorization.

28233077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 28233077 is about 5313.4806859534. The cubic root of 28233077 is about 304.4991403328.

The spelling of 28233077 in words is "twenty-eight million, two hundred thirty-three thousand, seventy-seven".