428331526 has 32 divisors (see below), whose sum is σ = 759748608. Its totient is φ = 177232320.

The previous prime is 428331517. The next prime is 428331529. The reversal of 428331526 is 625133824.

It is a junction number, because it is equal to n+sod(n) for n = 428331491 and 428331500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428331529) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 243466 + ... + 245218.

It is an arithmetic number, because the mean of its divisors is an integer number (23742144).

Almost surely, 2^428331526 is an apocalyptic number.

428331526 is a deficient number, since it is larger than the sum of its proper divisors (331417082).

428331526 is a wasteful number, since it uses less digits than its factorization.

428331526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356.

The product of its digits is 34560, while the sum is 34.

The square root of 428331526 is about 20696.1717716103. The cubic root of 428331526 is about 753.8067351482.

The spelling of 428331526 in words is "four hundred twenty-eight million, three hundred thirty-one thousand, five hundred twenty-six".