1045049728 has 16 divisors (see below), whose sum is σ = 2081935260. Its totient is φ = 522524800.

The previous prime is 1045049701. The next prime is 1045049729. The reversal of 1045049728 is 8279405401.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045049729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4082098 + ... + 4082353.

Almost surely, 2^1045049728 is an apocalyptic number.

It is an amenable number.

1045049728 is a deficient number, since it is larger than the sum of its proper divisors (1036885532).

1045049728 is an frugal number, since it uses more digits than its factorization.

1045049728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164465 (or 8164453 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1045049728 is about 32327.2288945403. The cubic root of 1045049728 is about 1014.7965580270.

The spelling of 1045049728 in words is "one billion, forty-five million, forty-nine thousand, seven hundred twenty-eight".