28758007 has 6 divisors (see below), whose sum is σ = 29002488. Its totient is φ = 28515564.

The previous prime is 28757977. The next prime is 28758011. The reversal of 28758007 is 70085782.

It is not a de Polignac number, because 28758007 - 2²³ = 20369399 is a prime.

It is a super-2 number, since 2×28758007² = 1654045933224098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28758047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15238 + ... + 17020.

It is an arithmetic number, because the mean of its divisors is an integer number (4833748).

Almost surely, 2^28758007 is an apocalyptic number.

28758007 is a deficient number, since it is larger than the sum of its proper divisors (244481).

28758007 is an equidigital number, since it uses as much as digits as its factorization.

28758007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 28758007 is about 5362.6492520022. The cubic root of 28758007 is about 306.3747207123.

The spelling of 28758007 in words is "twenty-eight million, seven hundred fifty-eight thousand, seven".