2217633740 has 48 divisors (see below), whose sum is σ = 5331154752. Its totient is φ = 759069696.

The previous prime is 2217633721. The next prime is 2217633749. The reversal of 2217633740 is 473367122.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2217633740.

It is not an unprimeable number, because it can be changed into a prime (2217633749) 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, 73544 + ... + 99216.

It is an arithmetic number, because the mean of its divisors is an integer number (111065724).

Almost surely, 2^2217633740 is an apocalyptic number.

2217633740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2217633740 is an abundant number, since it is smaller than the sum of its proper divisors (3113521012).

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

2217633740 is a wasteful number, since it uses less digits than its factorization.

2217633740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26306 (or 26304 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 2217633740 is about 47091.7587269790. The cubic root of 2217633740 is about 1304.0570964687.

The spelling of 2217633740 in words is "two billion, two hundred seventeen million, six hundred thirty-three thousand, seven hundred forty".