1401837728 has 24 divisors (see below), whose sum is σ = 2855037780. Its totient is φ = 676748800.

The previous prime is 1401837719. The next prime is 1401837733. The reversal of 1401837728 is 8277381041.

It can be written as a sum of positive squares in 2 ways, for example, as 1292258704 + 109579024 = 35948^2 + 10468^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754373 + ... + 756228.

Almost surely, 2^1401837728 is an apocalyptic number.

It is an amenable number.

1401837728 is an abundant number, since it is smaller than the sum of its proper divisors (1453200052).

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

1401837728 is a wasteful number, since it uses less digits than its factorization.

1401837728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510640 (or 1510632 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1401837728 is about 37441.1234874169. The cubic root of 1401837728 is about 1119.1782152012.

The spelling of 1401837728 in words is "one billion, four hundred one million, eight hundred thirty-seven thousand, seven hundred twenty-eight".