351478644 has 48 divisors (see below), whose sum is σ = 941767680. Its totient is φ = 100902240.

The previous prime is 351478619. The next prime is 351478661. The reversal of 351478644 is 446874153.

351478644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 351478596 and 351478605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67564 + ... + 72579.

It is an arithmetic number, because the mean of its divisors is an integer number (19620160).

Almost surely, 2^351478644 is an apocalyptic number.

It is an amenable number.

351478644 is an abundant number, since it is smaller than the sum of its proper divisors (590289036).

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

351478644 is a wasteful number, since it uses less digits than its factorization.

351478644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140180 (or 140178 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 351478644 is about 18747.7637066398. The cubic root of 351478644 is about 705.7209023419.

The spelling of 351478644 in words is "three hundred fifty-one million, four hundred seventy-eight thousand, six hundred forty-four".