1340907232 has 192 divisors, whose sum is σ = 3397718016. Its totient is φ = 507617280.

The previous prime is 1340907229. The next prime is 1340907233. The reversal of 1340907232 is 2327090431.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 1340907194 and 1340907203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340907233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4367623 + ... + 4367929.

It is an arithmetic number, because the mean of its divisors is an integer number (17696448).

Almost surely, 2^1340907232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340907232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698859008).

1340907232 is an abundant number, since it is smaller than the sum of its proper divisors (2056810784).

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

1340907232 is a wasteful number, since it uses less digits than its factorization.

1340907232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1340907232 is about 36618.4001835143. The cubic root of 1340907232 is about 1102.7225211624.

Adding to 1340907232 its reverse (2327090431), we get a palindrome (3667997663).

The spelling of 1340907232 in words is "one billion, three hundred forty million, nine hundred seven thousand, two hundred thirty-two".