28392319136391 has 32 divisors (see below), whose sum is σ = 43276412594688. Its totient is φ = 16219710812160.

The previous prime is 28392319136347. The next prime is 28392319136407. The reversal of 28392319136391 is 19363191329382.

It is not a de Polignac number, because 28392319136391 - 2⁶ = 28392319136327 is a prime.

It is a super-2 number, since 2×28392319136391² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28392319136791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2236137555 + ... + 2236150251.

It is an arithmetic number, because the mean of its divisors is an integer number (1352387893584).

Almost surely, 2^{28392319136391} is an apocalyptic number.

28392319136391 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28392319136391 is a deficient number, since it is larger than the sum of its proper divisors (14884093458297).

28392319136391 is a wasteful number, since it uses less digits than its factorization.

28392319136391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33671.

The product of its digits is 11337408, while the sum is 60.

The spelling of 28392319136391 in words is "twenty-eight trillion, three hundred ninety-two billion, three hundred nineteen million, one hundred thirty-six thousand, three hundred ninety-one".