1401503532 has 96 divisors (see below), whose sum is σ = 3974503680. Its totient is φ = 378497280.

The previous prime is 1401503491. The next prime is 1401503563. The reversal of 1401503532 is 2353051041.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35683 + ... + 63845.

It is an arithmetic number, because the mean of its divisors is an integer number (41401080).

Almost surely, 2^1401503532 is an apocalyptic number.

1401503532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401503532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1987251840).

1401503532 is an abundant number, since it is smaller than the sum of its proper divisors (2573000148).

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

1401503532 is a wasteful number, since it uses less digits than its factorization.

1401503532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28223 (or 28221 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1401503532 is about 37436.6602677108. The cubic root of 1401503532 is about 1119.0892713333.

Adding to 1401503532 its reverse (2353051041), we get a palindrome (3754554573).

The spelling of 1401503532 in words is "one billion, four hundred one million, five hundred three thousand, five hundred thirty-two".