28812907 has 2 divisors, whose sum is σ = 28812908. Its totient is φ = 28812906.

The previous prime is 28812877. The next prime is 28812937. The reversal of 28812907 is 70921882.

It is a balanced prime because it is at equal distance from previous prime (28812877) and next prime (28812937).

It is a cyclic number.

It is not a de Polignac number, because 28812907 - 2¹⁵ = 28780139 is a prime.

It is not a weakly prime, because it can be changed into another prime (28812937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14406453 + 14406454.

It is an arithmetic number, because the mean of its divisors is an integer number (14406454).

Almost surely, 2^28812907 is an apocalyptic number.

28812907 is a deficient number, since it is larger than the sum of its proper divisors (1).

28812907 is an equidigital number, since it uses as much as digits as its factorization.

28812907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 28812907 is about 5367.7655500217. The cubic root of 28812907 is about 306.5695566549.

The spelling of 28812907 in words is "twenty-eight million, eight hundred twelve thousand, nine hundred seven".