438543428 has 12 divisors (see below), whose sum is σ = 778260672. Its totient is φ = 216183240.

The previous prime is 438543419. The next prime is 438543433. The reversal of 438543428 is 824345834.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771800 + ... + 772367.

It is an arithmetic number, because the mean of its divisors is an integer number (64855056).

Almost surely, 2^438543428 is an apocalyptic number.

It is an amenable number.

438543428 is a deficient number, since it is larger than the sum of its proper divisors (339717244).

438543428 is a wasteful number, since it uses less digits than its factorization.

438543428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544242 (or 1544240 counting only the distinct ones).

The product of its digits is 368640, while the sum is 41.

The square root of 438543428 is about 20941.4285090583. The cubic root of 438543428 is about 759.7502803757.

The spelling of 438543428 in words is "four hundred thirty-eight million, five hundred forty-three thousand, four hundred twenty-eight".