127489890 has 32 divisors (see below), whose sum is σ = 333792576. Its totient is φ = 30906560.

The previous prime is 127489889. The next prime is 127489927. The reversal of 127489890 is 98984721.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192837 + ... + 193496.

It is an arithmetic number, because the mean of its divisors is an integer number (10431018).

Almost surely, 2^127489890 is an apocalyptic number.

127489890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127489890 is an abundant number, since it is smaller than the sum of its proper divisors (206302686).

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

127489890 is a wasteful number, since it uses less digits than its factorization.

127489890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386354.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 127489890 is about 11291.1421034367. The cubic root of 127489890 is about 503.2980512185.

The spelling of 127489890 in words is "one hundred twenty-seven million, four hundred eighty-nine thousand, eight hundred ninety".