420270844 has 54 divisors (see below), whose sum is σ = 886520544. Its totient is φ = 173643120.

The previous prime is 420270839. The next prime is 420270853. The reversal of 420270844 is 448072024.

420270844 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1597857 + ... + 1598119.

Almost surely, 2^420270844 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 420270844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443260272).

420270844 is an abundant number, since it is smaller than the sum of its proper divisors (466249700).

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

420270844 is a wasteful number, since it uses less digits than its factorization.

420270844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 420270844 is about 20500.5083839401. The cubic root of 420270844 is about 749.0481816037.

Multiplying 420270844 by its sum of digits (31), we get a square (13028396164 = 114142²).

420270844 divided by its sum of digits (31) gives a square (13557124 = 3682²).

The spelling of 420270844 in words is "four hundred twenty million, two hundred seventy thousand, eight hundred forty-four".