128556348 has 12 divisors (see below), whose sum is σ = 299964840. Its totient is φ = 42852112.

The previous prime is 128556347. The next prime is 128556353. The reversal of 128556348 is 843655821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×128556348² = 33053469222194208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128556343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5356503 + ... + 5356526.

It is an arithmetic number, because the mean of its divisors is an integer number (24997070).

Almost surely, 2^128556348 is an apocalyptic number.

It is an amenable number.

128556348 is an abundant number, since it is smaller than the sum of its proper divisors (171408492).

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

128556348 is a wasteful number, since it uses less digits than its factorization.

128556348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10713036 (or 10713034 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 128556348 is about 11338.2691800821. The cubic root of 128556348 is about 504.6975256272.

The spelling of 128556348 in words is "one hundred twenty-eight million, five hundred fifty-six thousand, three hundred forty-eight".