275470138 has 4 divisors (see below), whose sum is σ = 413205210. Its totient is φ = 137735068.

The previous prime is 275470121. The next prime is 275470177. The reversal of 275470138 is 831074572.

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., 249734809 + 25735329 = 15803^2 + 5073^2 .

It is a junction number, because it is equal to n+sod(n) for n = 275470097 and 275470106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68867533 + ... + 68867536.

Almost surely, 2^275470138 is an apocalyptic number.

275470138 is a deficient number, since it is larger than the sum of its proper divisors (137735072).

275470138 is a wasteful number, since it uses less digits than its factorization.

275470138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137735071.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 275470138 is about 16597.2930925498. The cubic root of 275470138 is about 650.6660927254. Note that the first 3 decimals are identical.

The spelling of 275470138 in words is "two hundred seventy-five million, four hundred seventy thousand, one hundred thirty-eight".