275379638 has 4 divisors (see below), whose sum is σ = 413069460. Its totient is φ = 137689818.

The previous prime is 275379619. The next prime is 275379647. The reversal of 275379638 is 836973572.

It is a happy number.

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

It is a super-2 number, since 2×275379638² = 151667890050022088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68844908 + ... + 68844911.

It is an arithmetic number, because the mean of its divisors is an integer number (103267365).

Almost surely, 2^275379638 is an apocalyptic number.

275379638 is a deficient number, since it is larger than the sum of its proper divisors (137689822).

275379638 is a wasteful number, since it uses less digits than its factorization.

275379638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137689821.

The product of its digits is 1905120, while the sum is 50.

The square root of 275379638 is about 16594.5665204006. The cubic root of 275379638 is about 650.5948306381.

The spelling of 275379638 in words is "two hundred seventy-five million, three hundred seventy-nine thousand, six hundred thirty-eight".