127623440 has 80 divisors (see below), whose sum is σ = 346108800. Its totient is φ = 43747200.

The previous prime is 127623439. The next prime is 127623449. The reversal of 127623440 is 44326721.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (127623449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25115 + ... + 29765.

It is an arithmetic number, because the mean of its divisors is an integer number (4326360).

Almost surely, 2^127623440 is an apocalyptic number.

127623440 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 127623440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173054400).

127623440 is an abundant number, since it is smaller than the sum of its proper divisors (218485360).

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

127623440 is an equidigital number, since it uses as much as digits as its factorization.

127623440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685 (or 4665 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 127623440 is about 11297.0544833598. The cubic root of 127623440 is about 503.4737305037.

The spelling of 127623440 in words is "one hundred twenty-seven million, six hundred twenty-three thousand, four hundred forty".