28788138381263 has 8 divisors (see below), whose sum is σ = 28915185118080. Its totient is φ = 28661093633880.

The previous prime is 28788138381257. The next prime is 28788138381271. The reversal of 28788138381263 is 36218383188782.

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 28788138381263 - 2⁸ = 28788138381007 is a prime.

It is a super-2 number, since 2×28788138381263² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28788138381193 and 28788138381202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28788138381253) 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, 33675758 + ... + 34520036.

It is an arithmetic number, because the mean of its divisors is an integer number (3614398139760).

Almost surely, 2^{28788138381263} is an apocalyptic number.

28788138381263 is a deficient number, since it is larger than the sum of its proper divisors (127046736817).

28788138381263 is a wasteful number, since it uses less digits than its factorization.

28788138381263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994717.

The product of its digits is 148635648, while the sum is 68.

The spelling of 28788138381263 in words is "twenty-eight trillion, seven hundred eighty-eight billion, one hundred thirty-eight million, three hundred eighty-one thousand, two hundred sixty-three".