274512638 has 4 divisors (see below), whose sum is σ = 411768960. Its totient is φ = 137256318.

The previous prime is 274512577. The next prime is 274512643. The reversal of 274512638 is 836215472.

It is a happy number.

274512638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68628158 + ... + 68628161.

It is an arithmetic number, because the mean of its divisors is an integer number (102942240).

Almost surely, 2^274512638 is an apocalyptic number.

274512638 is a deficient number, since it is larger than the sum of its proper divisors (137256322).

274512638 is a wasteful number, since it uses less digits than its factorization.

274512638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137256321.

The product of its digits is 80640, while the sum is 38.

The square root of 274512638 is about 16568.4229183106. The cubic root of 274512638 is about 649.9113393864.

The spelling of 274512638 in words is "two hundred seventy-four million, five hundred twelve thousand, six hundred thirty-eight".