424231728 has 20 divisors (see below), whose sum is σ = 1095932088. Its totient is φ = 141410560.

The previous prime is 424231681. The next prime is 424231733. The reversal of 424231728 is 827132424.

It is a happy 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 in 3 ways as a sum of consecutive naturals, for example, 4419033 + ... + 4419128.

Almost surely, 2^424231728 is an apocalyptic number.

424231728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

424231728 is an abundant number, since it is smaller than the sum of its proper divisors (671700360).

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

424231728 is a wasteful number, since it uses less digits than its factorization.

424231728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838172 (or 8838166 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 424231728 is about 20596.8863666332. The cubic root of 424231728 is about 751.3939870173.

The spelling of 424231728 in words is "four hundred twenty-four million, two hundred thirty-one thousand, seven hundred twenty-eight".