2182872420 has 72 divisors (see below), whose sum is σ = 7010882424. Its totient is φ = 547857408.

The previous prime is 2182872389. The next prime is 2182872443. The reversal of 2182872420 is 242782812.

2182872420 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 99680256 + 2083192164 = 9984^2 + 45642^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353619 + ... + 359738.

It is an arithmetic number, because the mean of its divisors is an integer number (97373367).

Almost surely, 2^2182872420 is an apocalyptic number.

2182872420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2182872420 is an abundant number, since it is smaller than the sum of its proper divisors (4828010004).

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

2182872420 is a wasteful number, since it uses less digits than its factorization.

2182872420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713389 (or 713384 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 2182872420 is about 46721.2202323527. The cubic root of 2182872420 is about 1297.2075008630.

The spelling of 2182872420 in words is "two billion, one hundred eighty-two million, eight hundred seventy-two thousand, four hundred twenty".