315784642 has 8 divisors (see below), whose sum is σ = 476513856. Its totient is φ = 156946692.

The previous prime is 315784621. The next prime is 315784643. The reversal of 315784642 is 246487513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 315784595 and 315784604.

It is not an unprimeable number, because it can be changed into a prime (315784643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472398 + ... + 473065.

It is an arithmetic number, because the mean of its divisors is an integer number (59564232).

Almost surely, 2^315784642 is an apocalyptic number.

315784642 is a deficient number, since it is larger than the sum of its proper divisors (160729214).

315784642 is a wasteful number, since it uses less digits than its factorization.

315784642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945632.

The product of its digits is 161280, while the sum is 40.

The square root of 315784642 is about 17770.3303852236. The cubic root of 315784642 is about 680.9736930489.

The spelling of 315784642 in words is "three hundred fifteen million, seven hundred eighty-four thousand, six hundred forty-two".