128377390 has 8 divisors (see below), whose sum is σ = 231079320. Its totient is φ = 51350952.

The previous prime is 128377369. The next prime is 128377393. The reversal of 128377390 is 93773821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128377393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6418860 + ... + 6418879.

It is an arithmetic number, because the mean of its divisors is an integer number (28884915).

Almost surely, 2^128377390 is an apocalyptic number.

128377390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128377390 is a deficient number, since it is larger than the sum of its proper divisors (102701930).

128377390 is a wasteful number, since it uses less digits than its factorization.

128377390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12837746.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 128377390 is about 11330.3746628256. The cubic root of 128377390 is about 504.4632273247.

The spelling of 128377390 in words is "one hundred twenty-eight million, three hundred seventy-seven thousand, three hundred ninety".