127651998 has 16 divisors (see below), whose sum is σ = 262204560. Its totient is φ = 41400576.

The previous prime is 127651991. The next prime is 127651999. The reversal of 127651998 is 899156721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127651991) 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, 287283 + ... + 287726.

It is an arithmetic number, because the mean of its divisors is an integer number (16387785).

Almost surely, 2^127651998 is an apocalyptic number.

127651998 is an abundant number, since it is smaller than the sum of its proper divisors (134552562).

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

127651998 is a wasteful number, since it uses less digits than its factorization.

127651998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575051.

The product of its digits is 272160, while the sum is 48.

The square root of 127651998 is about 11298.3183704479. The cubic root of 127651998 is about 503.5112814177.

The spelling of 127651998 in words is "one hundred twenty-seven million, six hundred fifty-one thousand, nine hundred ninety-eight".