28752907 has 2 divisors, whose sum is σ = 28752908. Its totient is φ = 28752906.

The previous prime is 28752887. The next prime is 28752923. The reversal of 28752907 is 70925782.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28752907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28752907.

It is not a weakly prime, because it can be changed into another prime (28752937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14376453 + 14376454.

It is an arithmetic number, because the mean of its divisors is an integer number (14376454).

Almost surely, 2^28752907 is an apocalyptic number.

28752907 is a deficient number, since it is larger than the sum of its proper divisors (1).

28752907 is an equidigital number, since it uses as much as digits as its factorization.

28752907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 28752907 is about 5362.1737196775. The cubic root of 28752907 is about 306.3566086151.

The spelling of 28752907 in words is "twenty-eight million, seven hundred fifty-two thousand, nine hundred seven".