128552970 has 192 divisors, whose sum is σ = 400377600. Its totient is φ = 26248320.

The previous prime is 128552959. The next prime is 128552989. The reversal of 128552970 is 79255821.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4146855 + ... + 4146885.

It is an arithmetic number, because the mean of its divisors is an integer number (2085300).

Almost surely, 2^128552970 is an apocalyptic number.

128552970 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 128552970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200188800).

128552970 is an abundant number, since it is smaller than the sum of its proper divisors (271824630).

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

128552970 is a wasteful number, since it uses less digits than its factorization.

128552970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 128552970 is about 11338.1202145682. The cubic root of 128552970 is about 504.6931050412.

The spelling of 128552970 in words is "one hundred twenty-eight million, five hundred fifty-two thousand, nine hundred seventy".