528890431 has 8 divisors (see below), whose sum is σ = 539076384. Its totient is φ = 518780640.

The previous prime is 528890423. The next prime is 528890443. The reversal of 528890431 is 134098825.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 528890431 - 2³ = 528890423 is a prime.

It is a super-2 number, since 2×528890431² = 559450176006731522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528890231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4920 + ... + 32893.

It is an arithmetic number, because the mean of its divisors is an integer number (67384548).

Almost surely, 2^528890431 is an apocalyptic number.

528890431 is a deficient number, since it is larger than the sum of its proper divisors (10185953).

528890431 is a wasteful number, since it uses less digits than its factorization.

528890431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38081.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 528890431 is about 22997.6179418652. The cubic root of 528890431 is about 808.7020981210.

The spelling of 528890431 in words is "five hundred twenty-eight million, eight hundred ninety thousand, four hundred thirty-one".