403528631840 has 96 divisors (see below), whose sum is σ = 986929380864. Its totient is φ = 155753809920.

The previous prime is 403528631839. The next prime is 403528631851. The reversal of 403528631840 is 48136825304.

It is a junction number, because it is equal to n+sod(n) for n = 403528631791 and 403528631800.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603892 + ... + 1838348.

It is an arithmetic number, because the mean of its divisors is an integer number (10280514384).

Almost surely, 2^403528631840 is an apocalyptic number.

403528631840 is a gapful number since it is divisible by the number (40) 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 403528631840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493464690432).

403528631840 is an abundant number, since it is smaller than the sum of its proper divisors (583400749024).

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

403528631840 is a wasteful number, since it uses less digits than its factorization.

403528631840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234850 (or 234842 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 403528631840 in words is "four hundred three billion, five hundred twenty-eight million, six hundred thirty-one thousand, eight hundred forty".