1073669728 has 48 divisors (see below), whose sum is σ = 2158425360. Its totient is φ = 525574656.

The previous prime is 1073669719. The next prime is 1073669741. The reversal of 1073669728 is 8279663701.

It is a happy number.

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, 521950 + ... + 524002.

It is an arithmetic number, because the mean of its divisors is an integer number (44967195).

Almost surely, 2^1073669728 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 1073669728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079212680).

1073669728 is an abundant number, since it is smaller than the sum of its proper divisors (1084755632).

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

1073669728 is a wasteful number, since it uses less digits than its factorization.

1073669728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1073669728 is about 32766.8998838767. The cubic root of 1073669728 is about 1023.9770807859.

The spelling of 1073669728 in words is "one billion, seventy-three million, six hundred sixty-nine thousand, seven hundred twenty-eight".