350640640 has 160 divisors (see below), whose sum is σ = 1018220544. Its totient is φ = 113049600.

The previous prime is 350640637. The next prime is 350640673. The reversal of 350640640 is 46046053.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 350640599 and 350640608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304065 + ... + 305215.

Almost surely, 2^350640640 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 350640640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509110272).

350640640 is an abundant number, since it is smaller than the sum of its proper divisors (667579904).

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

350640640 is a wasteful number, since it uses less digits than its factorization.

350640640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 350640640 is about 18725.4009302872. The cubic root of 350640640 is about 705.1595903149.

Adding to 350640640 its reverse (46046053), we get a palindrome (396686693).

The spelling of 350640640 in words is "three hundred fifty million, six hundred forty thousand, six hundred forty".