128446020 has 96 divisors (see below), whose sum is σ = 412554240. Its totient is φ = 33143040.

The previous prime is 128446013. The next prime is 128446027. The reversal of 128446020 is 20644821.

128446020 is a `hidden beast` number, since 12 + 8 + 44 + 602 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (128446013) and next prime (128446027).

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

It is not an unprimeable number, because it can be changed into a prime (128446027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12904 + ... + 20576.

It is an arithmetic number, because the mean of its divisors is an integer number (4297440).

Almost surely, 2^128446020 is an apocalyptic number.

128446020 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 128446020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206277120).

128446020 is an abundant number, since it is smaller than the sum of its proper divisors (284108220).

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

128446020 is a wasteful number, since it uses less digits than its factorization.

128446020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7722 (or 7714 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 128446020 is about 11333.4028429241. The cubic root of 128446020 is about 504.5531059335.

The spelling of 128446020 in words is "one hundred twenty-eight million, four hundred forty-six thousand, twenty".