28626757 has 2 divisors, whose sum is σ = 28626758. Its totient is φ = 28626756.

The previous prime is 28626739. The next prime is 28626769. The reversal of 28626757 is 75762682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17564481 + 11062276 = 4191^2 + 3326^2 .

It is a cyclic number.

It is not a de Polignac number, because 28626757 - 2¹⁵ = 28593989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28626707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14313378 + 14313379.

It is an arithmetic number, because the mean of its divisors is an integer number (14313379).

Almost surely, 2^28626757 is an apocalyptic number.

It is an amenable number.

28626757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28626757 is an equidigital number, since it uses as much as digits as its factorization.

28626757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The square root of 28626757 is about 5350.3978356754. The cubic root of 28626757 is about 305.9079172428.

It can be divided in two parts, 2862675 and 7, that added together give a palindrome (2862682).

The spelling of 28626757 in words is "twenty-eight million, six hundred twenty-six thousand, seven hundred fifty-seven".