420867284 has 12 divisors (see below), whose sum is σ = 760276608. Its totient is φ = 203645400.

The previous prime is 420867263. The next prime is 420867287. The reversal of 420867284 is 482768024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420867287) 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, 1696922 + ... + 1697169.

It is an arithmetic number, because the mean of its divisors is an integer number (63356384).

Almost surely, 2^420867284 is an apocalyptic number.

It is an amenable number.

420867284 is a deficient number, since it is larger than the sum of its proper divisors (339409324).

420867284 is a wasteful number, since it uses less digits than its factorization.

420867284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394126 (or 3394124 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 420867284 is about 20515.0501827317. The cubic root of 420867284 is about 749.4023588562.

The spelling of 420867284 in words is "four hundred twenty million, eight hundred sixty-seven thousand, two hundred eighty-four".