127215730 has 16 divisors (see below), whose sum is σ = 229863744. Its totient is φ = 50691760.

The previous prime is 127215727. The next prime is 127215733. The reversal of 127215730 is 37512721.

It is an interprime number because it is at equal distance from previous prime (127215727) and next prime (127215733).

It is not an unprimeable number, because it can be changed into a prime (127215733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21556 + ... + 26815.

It is an arithmetic number, because the mean of its divisors is an integer number (14366484).

Almost surely, 2^127215730 is an apocalyptic number.

127215730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127215730 is a deficient number, since it is larger than the sum of its proper divisors (102648014).

127215730 is a wasteful number, since it uses less digits than its factorization.

127215730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48641.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 127215730 is about 11278.9950793499. The cubic root of 127215730 is about 502.9370207054.

The spelling of 127215730 in words is "one hundred twenty-seven million, two hundred fifteen thousand, seven hundred thirty".