28572077 has 2 divisors, whose sum is σ = 28572078. Its totient is φ = 28572076.

The previous prime is 28572073. The next prime is 28572109. The reversal of 28572077 is 77027582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28526281 + 45796 = 5341^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 28572077 - 2² = 28572073 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28572077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28572073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14286038 + 14286039.

It is an arithmetic number, because the mean of its divisors is an integer number (14286039).

Almost surely, 2^28572077 is an apocalyptic number.

It is an amenable number.

28572077 is a deficient number, since it is larger than the sum of its proper divisors (1).

28572077 is an equidigital number, since it uses as much as digits as its factorization.

28572077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54880, while the sum is 38.

The square root of 28572077 is about 5345.2854928432. The cubic root of 28572077 is about 305.7130214169.

The spelling of 28572077 in words is "twenty-eight million, five hundred seventy-two thousand, seventy-seven".