1232216032440 has 128 divisors (see below), whose sum is σ = 3757761331200. Its totient is φ = 323197332480.

The previous prime is 1232216032427. The next prime is 1232216032469. The reversal of 1232216032440 is 442306122321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1232216032398 and 1232216032407.

It is a congruent number.

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, 1737849 + ... + 2341911.

It is an arithmetic number, because the mean of its divisors is an integer number (29357510400).

Almost surely, 2^{1232216032440} is an apocalyptic number.

1232216032440 is a gapful number since it is divisible by the number (10) 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 1232216032440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1878880665600).

1232216032440 is an abundant number, since it is smaller than the sum of its proper divisors (2525545298760).

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

1232216032440 is a wasteful number, since it uses less digits than its factorization.

1232216032440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604357 (or 604353 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 1232216032440 in words is "one trillion, two hundred thirty-two billion, two hundred sixteen million, thirty-two thousand, four hundred forty".