28138252657182 has 32 divisors (see below), whose sum is σ = 57508469789472. Its totient is φ = 9175140409344.

The previous prime is 28138252657133. The next prime is 28138252657213. The reversal of 28138252657182 is 28175625283182.

It is a super-2 number, since 2×28138252657182² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131176323 + ... + 131390654.

It is an arithmetic number, because the mean of its divisors is an integer number (1797139680921).

Almost surely, 2^{28138252657182} is an apocalyptic number.

28138252657182 is an abundant number, since it is smaller than the sum of its proper divisors (29370217132290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28138252657182 is a wasteful number, since it uses less digits than its factorization.

28138252657182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262567372.

The product of its digits is 25804800, while the sum is 60.

The spelling of 28138252657182 in words is "twenty-eight trillion, one hundred thirty-eight billion, two hundred fifty-two million, six hundred fifty-seven thousand, one hundred eighty-two".