2206694784 has 128 divisors (see below), whose sum is σ = 6862625280. Its totient is φ = 615075840.

The previous prime is 2206694783. The next prime is 2206694801. The reversal of 2206694784 is 4874966022.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206694783) 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, 100197 + ... + 120219.

It is an arithmetic number, because the mean of its divisors is an integer number (53614260).

Almost surely, 2^2206694784 is an apocalyptic number.

2206694784 is a gapful number since it is divisible by the number (24) 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 2206694784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3431312640).

2206694784 is an abundant number, since it is smaller than the sum of its proper divisors (4655930496).

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

2206694784 is a wasteful number, since it uses less digits than its factorization.

2206694784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20088 (or 20076 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 2206694784 is about 46975.4700242584. The cubic root of 2206694784 is about 1301.9093804099.

The spelling of 2206694784 in words is "two billion, two hundred six million, six hundred ninety-four thousand, seven hundred eighty-four".