128024280 has 256 divisors, whose sum is σ = 476928000. Its totient is φ = 30357504.

The previous prime is 128024269. The next prime is 128024321. The reversal of 128024280 is 82420821.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 348657 + ... + 349023.

It is an arithmetic number, because the mean of its divisors is an integer number (1863000).

Almost surely, 2^128024280 is an apocalyptic number.

128024280 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 128024280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238464000).

128024280 is an abundant number, since it is smaller than the sum of its proper divisors (348903720).

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

128024280 is a wasteful number, since it uses less digits than its factorization.

128024280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 128024280 is about 11314.7814826447. The cubic root of 128024280 is about 504.0002834466. Note that the first 3 decimals are identical.

The spelling of 128024280 in words is "one hundred twenty-eight million, twenty-four thousand, two hundred eighty".