127489690 has 16 divisors (see below), whose sum is σ = 239459328. Its totient is φ = 48778576.

The previous prime is 127489673. The next prime is 127489697. The reversal of 127489690 is 96984721.

It is a super-2 number, since 2×127489690² = 32507242112592200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 127489690.

It is not an unprimeable number, because it can be changed into a prime (127489697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276922 + ... + 277381.

It is an arithmetic number, because the mean of its divisors is an integer number (14966208).

Almost surely, 2^127489690 is an apocalyptic number.

127489690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127489690 is a deficient number, since it is larger than the sum of its proper divisors (111969638).

127489690 is a wasteful number, since it uses less digits than its factorization.

127489690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554333.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 127489690 is about 11291.1332469332. The cubic root of 127489690 is about 503.2977880351.

The spelling of 127489690 in words is "one hundred twenty-seven million, four hundred eighty-nine thousand, six hundred ninety".