28990727 has 2 divisors, whose sum is σ = 28990728. Its totient is φ = 28990726.

The previous prime is 28990711. The next prime is 28990733. The reversal of 28990727 is 72709982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28990727 - 2⁴ = 28990711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28990747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14495363 + 14495364.

It is an arithmetic number, because the mean of its divisors is an integer number (14495364).

Almost surely, 2^28990727 is an apocalyptic number.

28990727 is a deficient number, since it is larger than the sum of its proper divisors (1).

28990727 is an equidigital number, since it uses as much as digits as its factorization.

28990727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 28990727 is about 5384.3037618619. The cubic root of 28990727 is about 307.1989324179.

The spelling of 28990727 in words is "twenty-eight million, nine hundred ninety thousand, seven hundred twenty-seven".