28650507 has 8 divisors (see below), whose sum is σ = 38270784. Its totient is φ = 19065288.

The previous prime is 28650497. The next prime is 28650509. The reversal of 28650507 is 70505682.

It is a happy number.

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

It is not a de Polignac number, because 28650507 - 2⁶ = 28650443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28650509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6793 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (4783848).

Almost surely, 2^28650507 is an apocalyptic number.

28650507 is a deficient number, since it is larger than the sum of its proper divisors (9620277).

28650507 is a wasteful number, since it uses less digits than its factorization.

28650507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17529.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 28650507 is about 5352.6168366510. The cubic root of 28650507 is about 305.9924920196.

The spelling of 28650507 in words is "twenty-eight million, six hundred fifty thousand, five hundred seven".