528681420 has 36 divisors (see below), whose sum is σ = 1603667520. Its totient is φ = 140981664.

The previous prime is 528681379. The next prime is 528681421. The reversal of 528681420 is 24186825.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (528681421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1468380 + ... + 1468739.

It is an arithmetic number, because the mean of its divisors is an integer number (44546320).

Almost surely, 2^528681420 is an apocalyptic number.

It is an amenable number.

528681420 is an abundant number, since it is smaller than the sum of its proper divisors (1074986100).

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

528681420 is a wasteful number, since it uses less digits than its factorization.

528681420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937134 (or 2937129 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 528681420 is about 22993.0733048020. The cubic root of 528681420 is about 808.5955543739.

The spelling of 528681420 in words is "five hundred twenty-eight million, six hundred eighty-one thousand, four hundred twenty".