2147446820 has 24 divisors (see below), whose sum is σ = 4512803064. Its totient is φ = 858375936.

The previous prime is 2147446793. The next prime is 2147446831. The reversal of 2147446820 is 286447412.

It can be written as a sum of positive squares in 4 ways, for example, as 987090724 + 1160356096 = 31418^2 + 34064^2 .

It is a super-2 number, since 2×2147446820² = 9223055689456224800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7889 + ... + 66008.

It is an arithmetic number, because the mean of its divisors is an integer number (188033461).

Almost surely, 2^2147446820 is an apocalyptic number.

2147446820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2147446820 is an abundant number, since it is smaller than the sum of its proper divisors (2365356244).

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

2147446820 is a wasteful number, since it uses less digits than its factorization.

2147446820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75359 (or 75357 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 2147446820 is about 46340.5526509989. The cubic root of 2147446820 is about 1290.1517799096.

The spelling of 2147446820 in words is "two billion, one hundred forty-seven million, four hundred forty-six thousand, eight hundred twenty".