2081456220 has 24 divisors (see below), whose sum is σ = 5828077584. Its totient is φ = 555054976.

The previous prime is 2081456197. The next prime is 2081456233. The reversal of 2081456220 is 226541802.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17345409 + ... + 17345528.

It is an arithmetic number, because the mean of its divisors is an integer number (242836566).

Almost surely, 2^2081456220 is an apocalyptic number.

2081456220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2081456220 is an abundant number, since it is smaller than the sum of its proper divisors (3746621364).

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

2081456220 is a wasteful number, since it uses less digits than its factorization.

2081456220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34690949 (or 34690947 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2081456220 is about 45622.9790785302. The cubic root of 2081456220 is about 1276.7986854851.

The spelling of 2081456220 in words is "two billion, eighty-one million, four hundred fifty-six thousand, two hundred twenty".