28693275490 has 16 divisors (see below), whose sum is σ = 56343159360. Its totient is φ = 10433918320.

The previous prime is 28693275469. The next prime is 28693275493. The reversal of 28693275490 is 9457239682.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (28693275493) 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, 130423870 + ... + 130424089.

It is an arithmetic number, because the mean of its divisors is an integer number (3521447460).

Almost surely, 2^28693275490 is an apocalyptic number.

28693275490 is a deficient number, since it is larger than the sum of its proper divisors (27649883870).

28693275490 is a wasteful number, since it uses less digits than its factorization.

28693275490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260847977.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 28693275490 in words is "twenty-eight billion, six hundred ninety-three million, two hundred seventy-five thousand, four hundred ninety".