2171274240 has 88 divisors (see below), whose sum is σ = 6944734080. Its totient is φ = 579002368.

The previous prime is 2171274239. The next prime is 2171274253. The reversal of 2171274240 is 424721712.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2171274198 and 2171274207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55320 + ... + 86039.

Almost surely, 2^2171274240 is an apocalyptic number.

2171274240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171274240 is an abundant number, since it is smaller than the sum of its proper divisors (4773459840).

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

2171274240 is a wasteful number, since it uses less digits than its factorization.

2171274240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141387 (or 141369 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2171274240 is about 46596.9338047044. The cubic root of 2171274240 is about 1294.9059506441.

Adding to 2171274240 its reverse (424721712), we get a palindrome (2595995952).

The spelling of 2171274240 in words is "two billion, one hundred seventy-one million, two hundred seventy-four thousand, two hundred forty".