128623000 has 96 divisors (see below), whose sum is σ = 331138080. Its totient is φ = 46728000.

The previous prime is 128622979. The next prime is 128623013. The reversal of 128623000 is 326821.

It is a super-2 number, since 2×128623000² = 33087752258000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120469 + ... + 121531.

It is an arithmetic number, because the mean of its divisors is an integer number (3449355).

Almost surely, 2^128623000 is an apocalyptic number.

128623000 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 128623000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165569040).

128623000 is an abundant number, since it is smaller than the sum of its proper divisors (202515080).

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

128623000 is a wasteful number, since it uses less digits than its factorization.

128623000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 128623000 is about 11341.2080485282. The cubic root of 128623000 is about 504.7847332683.

Adding to 128623000 its reverse (326821), we get a palindrome (128949821).

The spelling of 128623000 in words is "one hundred twenty-eight million, six hundred twenty-three thousand".