420270344 has 64 divisors (see below), whose sum is σ = 867691440. Its totient is φ = 189665280.

The previous prime is 420270313. The next prime is 420270373. The reversal of 420270344 is 443072024.

It can be written as a sum of positive squares in 8 ways, for example, as 310816900 + 109453444 = 17630^2 + 10462^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1495484 + ... + 1495764.

Almost surely, 2^420270344 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 420270344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433845720).

420270344 is an abundant number, since it is smaller than the sum of its proper divisors (447421096).

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

420270344 is a wasteful number, since it uses less digits than its factorization.

420270344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 420270344 is about 20500.4961891170. The cubic root of 420270344 is about 749.0478845538.

The spelling of 420270344 in words is "four hundred twenty million, two hundred seventy thousand, three hundred forty-four".