2171343480 has 64 divisors (see below), whose sum is σ = 6665535360. Its totient is φ = 565557888.

The previous prime is 2171343443. The next prime is 2171343487. The reversal of 2171343480 is 843431712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171343487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205242 + ... + 215561.

It is an arithmetic number, because the mean of its divisors is an integer number (104148990).

Almost surely, 2^2171343480 is an apocalyptic number.

2171343480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171343480 is an abundant number, since it is smaller than the sum of its proper divisors (4494191880).

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

2171343480 is a wasteful number, since it uses less digits than its factorization.

2171343480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420860 (or 420856 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 2171343480 is about 46597.6767661221. The cubic root of 2171343480 is about 1294.9197149633.

The spelling of 2171343480 in words is "two billion, one hundred seventy-one million, three hundred forty-three thousand, four hundred eighty".