3069388728 has 160 divisors (see below), whose sum is σ = 9987262560. Its totient is φ = 862513920.

The previous prime is 3069388697. The next prime is 3069388747. The reversal of 3069388728 is 8278839603.

It is a super-2 number, since 2×3069388728² = 18842294327146915968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 271150 + ... + 282242.

It is an arithmetic number, because the mean of its divisors is an integer number (62420391).

Almost surely, 2^3069388728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3069388728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4993631280).

3069388728 is an abundant number, since it is smaller than the sum of its proper divisors (6917873832).

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

3069388728 is a wasteful number, since it uses less digits than its factorization.

3069388728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11179 (or 11166 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 3069388728 is about 55402.0642936705. The cubic root of 3069388728 is about 1453.2844654799.

The spelling of 3069388728 in words is "three billion, sixty-nine million, three hundred eighty-eight thousand, seven hundred twenty-eight".