28958907 has 16 divisors (see below), whose sum is σ = 42048000. Its totient is φ = 17658144.

The previous prime is 28958893. The next prime is 28958947. The reversal of 28958907 is 70985982.

It is a happy number.

It is not a de Polignac number, because 28958907 - 2⁷ = 28958779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28958947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7107 + ... + 10412.

It is an arithmetic number, because the mean of its divisors is an integer number (2628000).

Almost surely, 2^28958907 is an apocalyptic number.

28958907 is a deficient number, since it is larger than the sum of its proper divisors (13089093).

28958907 is a wasteful number, since it uses less digits than its factorization.

28958907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17570.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 28958907 is about 5381.3480653085. The cubic root of 28958907 is about 307.0864982068.

The spelling of 28958907 in words is "twenty-eight million, nine hundred fifty-eight thousand, nine hundred seven".