127643620 has 24 divisors (see below), whose sum is σ = 288671544. Its totient is φ = 47129856.

The previous prime is 127643569. The next prime is 127643683. The reversal of 127643620 is 26346721.

It can be written as a sum of positive squares in 4 ways, for example, as 15241216 + 112402404 = 3904^2 + 10602^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245209 + ... + 245728.

It is an arithmetic number, because the mean of its divisors is an integer number (12027981).

Almost surely, 2^127643620 is an apocalyptic number.

127643620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127643620 is an abundant number, since it is smaller than the sum of its proper divisors (161027924).

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

127643620 is a wasteful number, since it uses less digits than its factorization.

127643620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490959 (or 490957 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 127643620 is about 11297.9476012239. The cubic root of 127643620 is about 503.5002657661.

It can be divided in two parts, 12764 and 3620, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 127643620 in words is "one hundred twenty-seven million, six hundred forty-three thousand, six hundred twenty".