127704540 has 24 divisors (see below), whose sum is σ = 357572880. Its totient is φ = 34054528.

The previous prime is 127704523. The next prime is 127704569. The reversal of 127704540 is 45407721.

It is a super-2 number, since 2×127704540² = 32616899073223200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 127704498 and 127704507.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1064145 + ... + 1064264.

It is an arithmetic number, because the mean of its divisors is an integer number (14898870).

Almost surely, 2^127704540 is an apocalyptic number.

127704540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127704540 is an abundant number, since it is smaller than the sum of its proper divisors (229868340).

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

127704540 is a wasteful number, since it uses less digits than its factorization.

127704540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128421 (or 2128419 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 127704540 is about 11300.6433445180. The cubic root of 127704540 is about 503.5803542649.

The spelling of 127704540 in words is "one hundred twenty-seven million, seven hundred four thousand, five hundred forty".