2281451820 has 96 divisors (see below), whose sum is σ = 6772555776. Its totient is φ = 572832000.

The previous prime is 2281451819. The next prime is 2281451849. The reversal of 2281451820 is 281541822.

2281451820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52245 + ... + 85395.

It is an arithmetic number, because the mean of its divisors is an integer number (70547456).

Almost surely, 2^2281451820 is an apocalyptic number.

2281451820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2281451820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3386277888).

2281451820 is an abundant number, since it is smaller than the sum of its proper divisors (4491103956).

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

2281451820 is a wasteful number, since it uses less digits than its factorization.

2281451820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33231 (or 33229 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 2281451820 is about 47764.5456379520. The cubic root of 2281451820 is about 1316.4481763893.

The spelling of 2281451820 in words is "two billion, two hundred eighty-one million, four hundred fifty-one thousand, eight hundred twenty".