28011795031 has 16 divisors (see below), whose sum is σ = 31102564608. Its totient is φ = 25013894400.

The previous prime is 28011795029. The next prime is 28011795037. The reversal of 28011795031 is 13059711082.

It is not a de Polignac number, because 28011795031 - 2¹ = 28011795029 is a prime.

It is a super-2 number, since 2×28011795031² (a number of 22 digits) 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 (28011795037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206326 + ... + 313996.

It is an arithmetic number, because the mean of its divisors is an integer number (1943910288).

Almost surely, 2^28011795031 is an apocalyptic number.

28011795031 is a deficient number, since it is larger than the sum of its proper divisors (3090769577).

28011795031 is a wasteful number, since it uses less digits than its factorization.

28011795031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108102.

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 28011795031 in words is "twenty-eight billion, eleven million, seven hundred ninety-five thousand, thirty-one".