2177241940 has 12 divisors (see below), whose sum is σ = 4572208116. Its totient is φ = 870896768.

The previous prime is 2177241887. The next prime is 2177241953. The reversal of 2177241940 is 491427712.

It can be written as a sum of positive squares in 2 ways, for example, as 1366928784 + 810313156 = 36972^2 + 28466^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2177241940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54431029 + ... + 54431068.

It is an arithmetic number, because the mean of its divisors is an integer number (381017343).

Almost surely, 2^2177241940 is an apocalyptic number.

2177241940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2177241940 is an abundant number, since it is smaller than the sum of its proper divisors (2394966176).

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

2177241940 is a wasteful number, since it uses less digits than its factorization.

2177241940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108862106 (or 108862104 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 2177241940 is about 46660.9251944279. The cubic root of 2177241940 is about 1296.0912056996.

The spelling of 2177241940 in words is "two billion, one hundred seventy-seven million, two hundred forty-one thousand, nine hundred forty".