427435728 has 20 divisors (see below), whose sum is σ = 1104209088. Its totient is φ = 142478560.

The previous prime is 427435717. The next prime is 427435733. The reversal of 427435728 is 827534724.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 427435728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4452408 + ... + 4452503.

Almost surely, 2^427435728 is an apocalyptic number.

427435728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

427435728 is an abundant number, since it is smaller than the sum of its proper divisors (676773360).

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

427435728 is a wasteful number, since it uses less digits than its factorization.

427435728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8904922 (or 8904916 counting only the distinct ones).

The product of its digits is 376320, while the sum is 42.

The square root of 427435728 is about 20674.5188093943. The cubic root of 427435728 is about 753.2808731231.

The spelling of 427435728 in words is "four hundred twenty-seven million, four hundred thirty-five thousand, seven hundred twenty-eight".