528390420 has 48 divisors (see below), whose sum is σ = 1486540608. Its totient is φ = 140232960.

The previous prime is 528390389. The next prime is 528390427. The reversal of 528390420 is 24093825.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528390427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8209 + ... + 33528.

It is an arithmetic number, because the mean of its divisors is an integer number (30969596).

Almost surely, 2^528390420 is an apocalyptic number.

It is an amenable number.

528390420 is an abundant number, since it is smaller than the sum of its proper divisors (958150188).

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

528390420 is a wasteful number, since it uses less digits than its factorization.

528390420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41960 (or 41958 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 528390420 is about 22986.7444410904. The cubic root of 528390420 is about 808.4471698064.

It can be divided in two parts, 5283 and 90420, that added together give a triangular number (95703 = T₄₃₇).

The spelling of 528390420 in words is "five hundred twenty-eight million, three hundred ninety thousand, four hundred twenty".