338781642 has 32 divisors (see below), whose sum is σ = 684815040. Its totient is φ = 111724800.

The previous prime is 338781631. The next prime is 338781659. The reversal of 338781642 is 246187833.

338781642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×338781642² = 229546001912432328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 338781594 and 338781603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333928 + ... + 334940.

It is an arithmetic number, because the mean of its divisors is an integer number (21400470).

Almost surely, 2^338781642 is an apocalyptic number.

338781642 is an abundant number, since it is smaller than the sum of its proper divisors (346033398).

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

338781642 is a wasteful number, since it uses less digits than its factorization.

338781642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558.

The product of its digits is 193536, while the sum is 42.

The square root of 338781642 is about 18406.0218950212. The cubic root of 338781642 is about 697.1185236888.

The spelling of 338781642 in words is "three hundred thirty-eight million, seven hundred eighty-one thousand, six hundred forty-two".