128364544 has 156 divisors (see below), whose sum is σ = 331178512. Its totient is φ = 48660480.

The previous prime is 128364529. The next prime is 128364559. The reversal of 128364544 is 445463821.

It is an interprime number because it is at equal distance from previous prime (128364529) and next prime (128364559).

It is a Harshad number since it is a multiple of its sum of digits (37).

Its product of digits (92160) is a multiple of the sum of its prime factors (90).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3469294 + ... + 3469330.

Almost surely, 2^128364544 is an apocalyptic number.

128364544 is a gapful number since it is divisible by the number (14) 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 128364544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165589256).

128364544 is an abundant number, since it is smaller than the sum of its proper divisors (202813968).

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

128364544 is an equidigital number, since it uses as much as digits as its factorization.

128364544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 57 counting only the distinct ones).

The product of its digits is 92160, while the sum is 37.

The square root of 128364544 is about 11329.8077653595. The cubic root of 128364544 is about 504.4464005019.

It can be divided in two parts, 1283645 and 44, that added together give a square (1283689 = 1133²).

The spelling of 128364544 in words is "one hundred twenty-eight million, three hundred sixty-four thousand, five hundred forty-four".