127631620 has 12 divisors (see below), whose sum is σ = 268026444. Its totient is φ = 51052640.

The previous prime is 127631617. The next prime is 127631627. The reversal of 127631620 is 26136721.

It can be written as a sum of positive squares in 2 ways, for example, as 33269824 + 94361796 = 5768^2 + 9714^2 .

It is not an unprimeable number, because it can be changed into a prime (127631627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3190771 + ... + 3190810.

It is an arithmetic number, because the mean of its divisors is an integer number (22335537).

Almost surely, 2^127631620 is an apocalyptic number.

127631620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127631620 is an abundant number, since it is smaller than the sum of its proper divisors (140394824).

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

127631620 is a wasteful number, since it uses less digits than its factorization.

127631620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6381590 (or 6381588 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 127631620 is about 11297.4165188330. The cubic root of 127631620 is about 503.4844869581.

It can be divided in two parts, 1276 and 31620, that added together give a triangular number (32896 = T₂₅₆).

The spelling of 127631620 in words is "one hundred twenty-seven million, six hundred thirty-one thousand, six hundred twenty".