340452305440 has 96 divisors (see below), whose sum is σ = 869251473216. Its totient is φ = 125261061120.

The previous prime is 340452305399. The next prime is 340452305441. The reversal of 340452305440 is 44503254043.

It is a super-2 number, since 2×340452305440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340452305396 and 340452305405.

It is not an unprimeable number, because it can be changed into a prime (340452305441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299455 + ... + 877825.

It is an arithmetic number, because the mean of its divisors is an integer number (9054702846).

Almost surely, 2^340452305440 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 340452305440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434625736608).

340452305440 is an abundant number, since it is smaller than the sum of its proper divisors (528799167776).

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

340452305440 is a wasteful number, since it uses less digits than its factorization.

340452305440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578682 (or 578674 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 34.

Adding to 340452305440 its reverse (44503254043), we get a palindrome (384955559483).

The spelling of 340452305440 in words is "three hundred forty billion, four hundred fifty-two million, three hundred five thousand, four hundred forty".