431490528 has 72 divisors (see below), whose sum is σ = 1402350768. Its totient is φ = 123282432.

The previous prime is 431490473. The next prime is 431490533. The reversal of 431490528 is 825094134.

431490528 is a `hidden beast` number, since 43 + 1 + 4 + 90 + 528 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 431490492 and 431490501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105001 + ... + 109032.

It is an arithmetic number, because the mean of its divisors is an integer number (19477094).

Almost surely, 2^431490528 is an apocalyptic number.

431490528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

431490528 is an abundant number, since it is smaller than the sum of its proper divisors (970860240).

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

431490528 is a wasteful number, since it uses less digits than its factorization.

431490528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214056 (or 214045 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 431490528 is about 20772.3500837050. The cubic root of 431490528 is about 755.6553396599.

The spelling of 431490528 in words is "four hundred thirty-one million, four hundred ninety thousand, five hundred twenty-eight".