271642978 has 4 divisors (see below), whose sum is σ = 407464470. Its totient is φ = 135821488.

The previous prime is 271642963. The next prime is 271643003. The reversal of 271642978 is 879246172.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 172580769 + 99062209 = 13137^2 + 9953^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67910743 + ... + 67910746.

Almost surely, 2^271642978 is an apocalyptic number.

271642978 is a deficient number, since it is larger than the sum of its proper divisors (135821492).

271642978 is a wasteful number, since it uses less digits than its factorization.

271642978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135821491.

The product of its digits is 338688, while the sum is 46.

The square root of 271642978 is about 16481.5951291130. The cubic root of 271642978 is about 647.6387526322.

The spelling of 271642978 in words is "two hundred seventy-one million, six hundred forty-two thousand, nine hundred seventy-eight".