127764120 has 128 divisors (see below), whose sum is σ = 421562880. Its totient is φ = 30720000.

The previous prime is 127764097. The next prime is 127764139. The reversal of 127764120 is 21467721.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199000 + ... + 199640.

It is an arithmetic number, because the mean of its divisors is an integer number (3293460).

Almost surely, 2^127764120 is an apocalyptic number.

127764120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127764120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210781440).

127764120 is an abundant number, since it is smaller than the sum of its proper divisors (293798760).

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

127764120 is a wasteful number, since it uses less digits than its factorization.

127764120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 127764120 is about 11303.2791702231. The cubic root of 127764120 is about 503.6586565000.

The spelling of 127764120 in words is "one hundred twenty-seven million, seven hundred sixty-four thousand, one hundred twenty".