28759407 has 16 divisors (see below), whose sum is σ = 42120960. Its totient is φ = 17373312.

The previous prime is 28759403. The next prime is 28759429. The reversal of 28759407 is 70495782.

It is not a de Polignac number, because 28759407 - 2² = 28759403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28759403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9658 + ... + 12279.

It is an arithmetic number, because the mean of its divisors is an integer number (2632560).

Almost surely, 2^28759407 is an apocalyptic number.

28759407 is a deficient number, since it is larger than the sum of its proper divisors (13361553).

28759407 is a wasteful number, since it uses less digits than its factorization.

28759407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21982.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 28759407 is about 5362.7797829111. The cubic root of 28759407 is about 306.3796922859.

The spelling of 28759407 in words is "twenty-eight million, seven hundred fifty-nine thousand, four hundred seven".