128046840 has 32 divisors (see below), whose sum is σ = 384140880. Its totient is φ = 34145792.

The previous prime is 128046829. The next prime is 128046859. The reversal of 128046840 is 48640821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533409 + ... + 533648.

Almost surely, 2^128046840 is an apocalyptic number.

128046840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128046840 is an abundant number, since it is smaller than the sum of its proper divisors (256094040).

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

128046840 is a wasteful number, since it uses less digits than its factorization.

128046840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067071 (or 1067067 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 128046840 is about 11315.7783647436. The cubic root of 128046840 is about 504.0298861089.

The spelling of 128046840 in words is "one hundred twenty-eight million, forty-six thousand, eight hundred forty".