2270890420 has 24 divisors (see below), whose sum is σ = 4771915848. Its totient is φ = 907776000.

The previous prime is 2270890387. The next prime is 2270890421. The reversal of 2270890420 is 240980722.

It can be written as a sum of positive squares in 4 ways, for example, as 1503267984 + 767622436 = 38772^2 + 27706^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2270890421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3441 + ... + 67480.

It is an arithmetic number, because the mean of its divisors is an integer number (198829827).

Almost surely, 2^2270890420 is an apocalyptic number.

2270890420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2270890420 is an abundant number, since it is smaller than the sum of its proper divisors (2501025428).

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

2270890420 is a wasteful number, since it uses less digits than its factorization.

2270890420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72531 (or 72529 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2270890420 is about 47653.8604941929. The cubic root of 2270890420 is about 1314.4136465507.

The spelling of 2270890420 in words is "two billion, two hundred seventy million, eight hundred ninety thousand, four hundred twenty".