2176215040 has 72 divisors (see below), whose sum is σ = 5232992310. Its totient is φ = 868597760.

The previous prime is 2176215031. The next prime is 2176215043. The reversal of 2176215040 is 405126712.

It can be written as a sum of positive squares in 3 ways, for example, as 1385030656 + 791184384 = 37216^2 + 28128^2 .

It is not an unprimeable number, because it can be changed into a prime (2176215043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4720410 + ... + 4720870.

Almost surely, 2^2176215040 is an apocalyptic number.

2176215040 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 2176215040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2616496155).

2176215040 is an abundant number, since it is smaller than the sum of its proper divisors (3056777270).

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

2176215040 is an frugal number, since it uses more digits than its factorization.

2176215040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2176215040 is about 46649.9200428039. The cubic root of 2176215040 is about 1295.8874057545.

The spelling of 2176215040 in words is "two billion, one hundred seventy-six million, two hundred fifteen thousand, forty".