420044280 has 64 divisors (see below), whose sum is σ = 1261798560. Its totient is φ = 111863808.

The previous prime is 420044257. The next prime is 420044281. The reversal of 420044280 is 82440024.

It is a Harshad number since it is a multiple of its sum of digits (24).

420044280 is a modest number, since divided by 44280 gives 4200 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 420044280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420044281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112524 + ... + 116196.

Almost surely, 2^420044280 is an apocalyptic number.

420044280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420044280 is an abundant number, since it is smaller than the sum of its proper divisors (841754280).

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

420044280 is a wasteful number, since it uses less digits than its factorization.

420044280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640 (or 4636 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 420044280 is about 20494.9818248273. The cubic root of 420044280 is about 748.9135558343.

The spelling of 420044280 in words is "four hundred twenty million, forty-four thousand, two hundred eighty".