420433536 has 64 divisors (see below), whose sum is σ = 1122285600. Its totient is φ = 139453440.

The previous prime is 420433523. The next prime is 420433543. The reversal of 420433536 is 635334024.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78430 + ... + 83618.

Almost surely, 2^420433536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420433536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561142800).

420433536 is an abundant number, since it is smaller than the sum of its proper divisors (701852064).

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

420433536 is a wasteful number, since it uses less digits than its factorization.

420433536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417 (or 5405 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

The square root of 420433536 is about 20504.4759991569. The cubic root of 420433536 is about 749.1448243813.

The spelling of 420433536 in words is "four hundred twenty million, four hundred thirty-three thousand, five hundred thirty-six".