421534328 has 8 divisors (see below), whose sum is σ = 790376880. Its totient is φ = 210767160.

The previous prime is 421534277. The next prime is 421534357. The reversal of 421534328 is 823435124.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 421534294 and 421534303.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 26345888 + ... + 26345903.

It is an arithmetic number, because the mean of its divisors is an integer number (98797110).

Almost surely, 2^421534328 is an apocalyptic number.

It is an amenable number.

421534328 is a deficient number, since it is larger than the sum of its proper divisors (368842552).

421534328 is a wasteful number, since it uses less digits than its factorization.

421534328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52691797 (or 52691793 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 421534328 is about 20531.3011764963. The cubic root of 421534328 is about 749.7980659314.

The spelling of 421534328 in words is "four hundred twenty-one million, five hundred thirty-four thousand, three hundred twenty-eight".