274129906 has 4 divisors (see below), whose sum is σ = 411194862. Its totient is φ = 137064952.

The previous prime is 274129861. The next prime is 274129907. The reversal of 274129906 is 609921472.

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., 271755225 + 2374681 = 16485^2 + 1541^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (274129907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68532475 + ... + 68532478.

Almost surely, 2^274129906 is an apocalyptic number.

274129906 is a deficient number, since it is larger than the sum of its proper divisors (137064956).

274129906 is a wasteful number, since it uses less digits than its factorization.

274129906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137064955.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 274129906 is about 16556.8688464939. The cubic root of 274129906 is about 649.6091583299.

The spelling of 274129906 in words is "two hundred seventy-four million, one hundred twenty-nine thousand, nine hundred six".