127623990 has 64 divisors (see below), whose sum is σ = 331531200. Its totient is φ = 31256064.

The previous prime is 127623961. The next prime is 127623997. The reversal of 127623990 is 99326721.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127623997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88596 + ... + 90024.

It is an arithmetic number, because the mean of its divisors is an integer number (5180175).

Almost surely, 2^127623990 is an apocalyptic number.

127623990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 127623990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165765600).

127623990 is an abundant number, since it is smaller than the sum of its proper divisors (203907210).

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

127623990 is a wasteful number, since it uses less digits than its factorization.

127623990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 127623990 is about 11297.0788259620. The cubic root of 127623990 is about 503.4744537516.

The spelling of 127623990 in words is "one hundred twenty-seven million, six hundred twenty-three thousand, nine hundred ninety".