1401701728 has 48 divisors (see below), whose sum is σ = 3156360480. Its totient is φ = 600247296.

The previous prime is 1401701723. The next prime is 1401701753. The reversal of 1401701728 is 8271071041.

It is a self number, because there is not a number n which added to its sum of digits gives 1401701728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401701723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512268 + ... + 514996.

It is an arithmetic number, because the mean of its divisors is an integer number (65757510).

Almost surely, 2^1401701728 is an apocalyptic number.

It is an amenable number.

1401701728 is an abundant number, since it is smaller than the sum of its proper divisors (1754658752).

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

1401701728 is a wasteful number, since it uses less digits than its factorization.

1401701728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039 (or 5031 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 1401701728 is about 37439.3072585485. The cubic root of 1401701728 is about 1119.1420214829.

Adding to 1401701728 its reverse (8271071041), we get a palindrome (9672772769).

The spelling of 1401701728 in words is "one billion, four hundred one million, seven hundred one thousand, seven hundred twenty-eight".