28127146938 has 16 divisors (see below), whose sum is σ = 61368320736. Its totient is φ = 8523377840.

The previous prime is 28127146937. The next prime is 28127146961. The reversal of 28127146938 is 83964172182.

It is a happy number.

It is a super-2 number, since 2×28127146938² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28127146937) 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, 213084381 + ... + 213084512.

It is an arithmetic number, because the mean of its divisors is an integer number (3835520046).

Almost surely, 2^28127146938 is an apocalyptic number.

28127146938 is an abundant number, since it is smaller than the sum of its proper divisors (33241173798).

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

28127146938 is a wasteful number, since it uses less digits than its factorization.

28127146938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426168909.

The product of its digits is 1161216, while the sum is 51.

The spelling of 28127146938 in words is "twenty-eight billion, one hundred twenty-seven million, one hundred forty-six thousand, nine hundred thirty-eight".