275890438 has 4 divisors (see below), whose sum is σ = 413835660. Its totient is φ = 137945218.

The previous prime is 275890429. The next prime is 275890453. The reversal of 275890438 is 834098572.

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

It is a super-2 number, since 2×275890438² = 152231067559663688, 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, 68972608 + ... + 68972611.

It is an arithmetic number, because the mean of its divisors is an integer number (103458915).

Almost surely, 2^275890438 is an apocalyptic number.

275890438 is a deficient number, since it is larger than the sum of its proper divisors (137945222).

275890438 is a wasteful number, since it uses less digits than its factorization.

275890438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137945221.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 275890438 is about 16609.9499698223. The cubic root of 275890438 is about 650.9968436291.

The spelling of 275890438 in words is "two hundred seventy-five million, eight hundred ninety thousand, four hundred thirty-eight".