127720464 has 40 divisors (see below), whose sum is σ = 330350880. Its totient is φ = 42521088.

The previous prime is 127720421. The next prime is 127720477. The reversal of 127720464 is 464027721.

It is an unprimeable number.

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, 70579 + ... + 72365.

It is an arithmetic number, because the mean of its divisors is an integer number (8258772).

Almost surely, 2^127720464 is an apocalyptic number.

It is an amenable number.

127720464 is an abundant number, since it is smaller than the sum of its proper divisors (202630416).

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

127720464 is a wasteful number, since it uses less digits than its factorization.

127720464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287 (or 3281 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 127720464 is about 11301.3478842127. The cubic root of 127720464 is about 503.6012845578.

The spelling of 127720464 in words is "one hundred twenty-seven million, seven hundred twenty thousand, four hundred sixty-four".