2147386920 has 128 divisors (see below), whose sum is σ = 7372512000. Its totient is φ = 490162176.

The previous prime is 2147386883. The next prime is 2147386921. The reversal of 2147386920 is 296837412.

It is a super-2 number, since 2×2147386920² = 9222541168374172800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2147386921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879942 + ... + 882378.

It is an arithmetic number, because the mean of its divisors is an integer number (57597750).

Almost surely, 2^2147386920 is an apocalyptic number.

2147386920 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 2147386920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3686256000).

2147386920 is an abundant number, since it is smaller than the sum of its proper divisors (5225125080).

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

2147386920 is a wasteful number, since it uses less digits than its factorization.

2147386920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507 (or 3503 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 2147386920 is about 46339.9063443162. The cubic root of 2147386920 is about 1290.1397841434.

The spelling of 2147386920 in words is "two billion, one hundred forty-seven million, three hundred eighty-six thousand, nine hundred twenty".