420468784 has 20 divisors (see below), whose sum is σ = 857535640. Its totient is φ = 199169280.

The previous prime is 420468781. The next prime is 420468793. The reversal of 420468784 is 487864024.

It is a self number, because there is not a number n which added to its sum of digits gives 420468784.

It is not an unprimeable number, because it can be changed into a prime (420468781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691257 + ... + 691864.

It is an arithmetic number, because the mean of its divisors is an integer number (42876782).

Almost surely, 2^420468784 is an apocalyptic number.

It is an amenable number.

420468784 is an abundant number, since it is smaller than the sum of its proper divisors (437066856).

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

420468784 is a wasteful number, since it uses less digits than its factorization.

420468784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383148 (or 1383142 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 43.

The square root of 420468784 is about 20505.3355007910. The cubic root of 420468784 is about 749.1657592153.

The spelling of 420468784 in words is "four hundred twenty million, four hundred sixty-eight thousand, seven hundred eighty-four".