338864872 has 8 divisors (see below), whose sum is σ = 635371650. Its totient is φ = 169432432.

The previous prime is 338864863. The next prime is 338864879. The reversal of 338864872 is 278468833.

It can be written as a sum of positive squares in only one way, i.e., 267191716 + 71673156 = 16346^2 + 8466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×338864872² = 229658802951152768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338864879) by changing a digit.

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 as a sum of consecutive naturals, namely, 21179047 + ... + 21179062.

Almost surely, 2^338864872 is an apocalyptic number.

It is an amenable number.

338864872 is a deficient number, since it is larger than the sum of its proper divisors (296506778).

338864872 is a wasteful number, since it uses less digits than its factorization.

338864872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42358115 (or 42358111 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The square root of 338864872 is about 18408.2827010017. The cubic root of 338864872 is about 697.1756070888.

The spelling of 338864872 in words is "three hundred thirty-eight million, eight hundred sixty-four thousand, eight hundred seventy-two".