28058907 has 12 divisors (see below), whose sum is σ = 37758776. Its totient is φ = 18533760.

The previous prime is 28058903. The next prime is 28058909. The reversal of 28058907 is 70985082.

It is not a de Polignac number, because 28058907 - 2² = 28058903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28058903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116307 + ... + 116547.

Almost surely, 2^28058907 is an apocalyptic number.

28058907 is a deficient number, since it is larger than the sum of its proper divisors (9699869).

28058907 is an equidigital number, since it uses as much as digits as its factorization.

28058907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 28058907 is about 5297.0658859410. The cubic root of 28058907 is about 303.8716960586.

The spelling of 28058907 in words is "twenty-eight million, fifty-eight thousand, nine hundred seven".