128746260 has 144 divisors (see below), whose sum is σ = 412776000. Its totient is φ = 33675264.

The previous prime is 128746229. The next prime is 128746279. The reversal of 128746260 is 62647821.

128746260 is a `hidden beast` number, since 1 + 28 + 7 + 4 + 626 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 286516 + ... + 286964.

It is an arithmetic number, because the mean of its divisors is an integer number (2866500).

Almost surely, 2^128746260 is an apocalyptic number.

128746260 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 128746260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206388000).

128746260 is an abundant number, since it is smaller than the sum of its proper divisors (284029740).

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

128746260 is a wasteful number, since it uses less digits than its factorization.

128746260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 128746260 is about 11346.6409126226. The cubic root of 128746260 is about 504.9459276157.

The spelling of 128746260 in words is "one hundred twenty-eight million, seven hundred forty-six thousand, two hundred sixty".