427381636 has 12 divisors (see below), whose sum is σ = 815910480. Its totient is φ = 194264360.

The previous prime is 427381609. The next prime is 427381637. The reversal of 427381636 is 636183724.

It is not an unprimeable number, because it can be changed into a prime (427381637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4856566 + ... + 4856653.

It is an arithmetic number, because the mean of its divisors is an integer number (67992540).

Almost surely, 2^427381636 is an apocalyptic number.

It is an amenable number.

427381636 is a deficient number, since it is larger than the sum of its proper divisors (388528844).

427381636 is a wasteful number, since it uses less digits than its factorization.

427381636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713234 (or 9713232 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 427381636 is about 20673.2105876180. The cubic root of 427381636 is about 753.2490958794.

The spelling of 427381636 in words is "four hundred twenty-seven million, three hundred eighty-one thousand, six hundred thirty-six".