128526620 has 24 divisors (see below), whose sum is σ = 278613888. Its totient is φ = 49752000.

The previous prime is 128526571. The next prime is 128526631. The reversal of 128526620 is 26625821.

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 7 ways as a sum of consecutive naturals, for example, 103031 + ... + 104270.

It is an arithmetic number, because the mean of its divisors is an integer number (11608912).

Almost surely, 2^128526620 is an apocalyptic number.

128526620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128526620 is an abundant number, since it is smaller than the sum of its proper divisors (150087268).

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

128526620 is a wasteful number, since it uses less digits than its factorization.

128526620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207341 (or 207339 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 128526620 is about 11336.9581458167. The cubic root of 128526620 is about 504.6586197182.

The spelling of 128526620 in words is "one hundred twenty-eight million, five hundred twenty-six thousand, six hundred twenty".