187731484028 has 108 divisors (see below), whose sum is σ = 381436881840. Its totient is φ = 80770229760.

The previous prime is 187731484027. The next prime is 187731484043. The reversal of 187731484028 is 820484137781.

It is a super-2 number, since 2×187731484028² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187731484027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24831713 + ... + 24839271.

It is an arithmetic number, because the mean of its divisors is an integer number (3531822980).

Almost surely, 2^187731484028 is an apocalyptic number.

It is an amenable number.

187731484028 is an abundant number, since it is smaller than the sum of its proper divisors (193705397812).

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

187731484028 is a wasteful number, since it uses less digits than its factorization.

187731484028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7728 (or 7692 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 53.

The spelling of 187731484028 in words is "one hundred eighty-seven billion, seven hundred thirty-one million, four hundred eighty-four thousand, twenty-eight".