127890220 has 12 divisors (see below), whose sum is σ = 268569504. Its totient is φ = 51156080.

The previous prime is 127890209. The next prime is 127890223. The reversal of 127890220 is 22098721.

It is not an unprimeable number, because it can be changed into a prime (127890223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3197236 + ... + 3197275.

It is an arithmetic number, because the mean of its divisors is an integer number (22380792).

Almost surely, 2^127890220 is an apocalyptic number.

127890220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127890220 is an abundant number, since it is smaller than the sum of its proper divisors (140679284).

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

127890220 is a wasteful number, since it uses less digits than its factorization.

127890220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394520 (or 6394518 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 127890220 is about 11308.8558218769. The cubic root of 127890220 is about 503.8243015270.

The spelling of 127890220 in words is "one hundred twenty-seven million, eight hundred ninety thousand, two hundred twenty".