351988656 has 40 divisors (see below), whose sum is σ = 910626240. Its totient is φ = 117158976.

The previous prime is 351988639. The next prime is 351988657. The reversal of 351988656 is 656889153.

It is a junction number, because it is equal to n+sod(n) for n = 351988599 and 351988608.

It is not an unprimeable number, because it can be changed into a prime (351988657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30511 + ... + 40433.

It is an arithmetic number, because the mean of its divisors is an integer number (22765656).

Almost surely, 2^351988656 is an apocalyptic number.

It is an amenable number.

351988656 is an abundant number, since it is smaller than the sum of its proper divisors (558637584).

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

351988656 is a wasteful number, since it uses less digits than its factorization.

351988656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673 (or 10667 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 51.

The square root of 351988656 is about 18761.3607182422. The cubic root of 351988656 is about 706.0620820838.

The spelling of 351988656 in words is "three hundred fifty-one million, nine hundred eighty-eight thousand, six hundred fifty-six".