1409448728 has 48 divisors (see below), whose sum is σ = 2874735000. Its totient is φ = 646030080.

The previous prime is 1409448727. The next prime is 1409448757. The reversal of 1409448728 is 8278449041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409448727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141248 + ... + 150896.

Almost surely, 2^1409448728 is an apocalyptic number.

It is an amenable number.

1409448728 is an abundant number, since it is smaller than the sum of its proper divisors (1465286272).

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

1409448728 is a wasteful number, since it uses less digits than its factorization.

1409448728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9736 (or 9701 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 1409448728 is about 37542.6254809117. The cubic root of 1409448728 is about 1121.2000126939.

The spelling of 1409448728 in words is "one billion, four hundred nine million, four hundred forty-eight thousand, seven hundred twenty-eight".