28930407 has 16 divisors (see below), whose sum is σ = 44296320. Its totient is φ = 16610400.

The previous prime is 28930361. The next prime is 28930457. The reversal of 28930407 is 70403982.

It is not a de Polignac number, because 28930407 - 2⁸ = 28930151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28930457) 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, 22444 + ... + 23697.

It is an arithmetic number, because the mean of its divisors is an integer number (2768520).

Almost surely, 2^28930407 is an apocalyptic number.

28930407 is a deficient number, since it is larger than the sum of its proper divisors (15365913).

28930407 is a wasteful number, since it uses less digits than its factorization.

28930407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46174.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 28930407 is about 5378.6993781025. The cubic root of 28930407 is about 306.9857250911.

The spelling of 28930407 in words is "twenty-eight million, nine hundred thirty thousand, four hundred seven".