3728688822 has 16 divisors (see below), whose sum is σ = 8285975280. Its totient is φ = 1242896256.

The previous prime is 3728688809. The next prime is 3728688841. The reversal of 3728688822 is 2288868273.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 69049793 = 3728688822 / (3 + 7 + 2 + 8 + 6 + 8 + 8 + 8 + 2 + 2).

It is a congruent number.

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, 34524843 + ... + 34524950.

It is an arithmetic number, because the mean of its divisors is an integer number (517873455).

Almost surely, 2^3728688822 is an apocalyptic number.

3728688822 is an abundant number, since it is smaller than the sum of its proper divisors (4557286458).

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

3728688822 is a wasteful number, since it uses less digits than its factorization.

3728688822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69049804 (or 69049798 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 54.

The square root of 3728688822 is about 61062.9906080598. The cubic root of 3728688822 is about 1550.6676030837.

The spelling of 3728688822 in words is "three billion, seven hundred twenty-eight million, six hundred eighty-eight thousand, eight hundred twenty-two".