28376507 has 8 divisors (see below), whose sum is σ = 28835136. Its totient is φ = 27921672.

The previous prime is 28376497. The next prime is 28376539. The reversal of 28376507 is 70567382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28376507 - 2⁸ = 28376251 is a prime.

It is a super-2 number, since 2×28376507² = 1610452299042098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28376567) 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 7 ways as a sum of consecutive naturals, for example, 16628 + ... + 18254.

It is an arithmetic number, because the mean of its divisors is an integer number (3604392).

Almost surely, 2^28376507 is an apocalyptic number.

28376507 is a deficient number, since it is larger than the sum of its proper divisors (458629).

28376507 is a wasteful number, since it uses less digits than its factorization.

28376507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 28376507 is about 5326.9603903164. The cubic root of 28376507 is about 305.0139096048.

The spelling of 28376507 in words is "twenty-eight million, three hundred seventy-six thousand, five hundred seven".