127644490 has 8 divisors (see below), whose sum is σ = 229760100. Its totient is φ = 51057792.

The previous prime is 127644481. The next prime is 127644493. The reversal of 127644490 is 94446721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 122965921 + 4678569 = 11089^2 + 2163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (127644493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6382215 + ... + 6382234.

Almost surely, 2^127644490 is an apocalyptic number.

127644490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127644490 is a deficient number, since it is larger than the sum of its proper divisors (102115610).

127644490 is a wasteful number, since it uses less digits than its factorization.

127644490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12764456.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 127644490 is about 11297.9861037266. The cubic root of 127644490 is about 503.5014096912.

The spelling of 127644490 in words is "one hundred twenty-seven million, six hundred forty-four thousand, four hundred ninety".