128456052 has 12 divisors (see below), whose sum is σ = 299730816. Its totient is φ = 42818680.

The previous prime is 128456021. The next prime is 128456071. The reversal of 128456052 is 250654821.

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

It is a super-3 number, since 3×128456052³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5352324 + ... + 5352347.

It is an arithmetic number, because the mean of its divisors is an integer number (24977568).

Almost surely, 2^128456052 is an apocalyptic number.

128456052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128456052 is an abundant number, since it is smaller than the sum of its proper divisors (171274764).

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

128456052 is a wasteful number, since it uses less digits than its factorization.

128456052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10704678 (or 10704676 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 128456052 is about 11333.8454198035. The cubic root of 128456052 is about 504.5662412698.

The spelling of 128456052 in words is "one hundred twenty-eight million, four hundred fifty-six thousand, fifty-two".