255682738 has 4 divisors (see below), whose sum is σ = 383524110. Its totient is φ = 127841368.

The previous prime is 255682711. The next prime is 255682747. The reversal of 255682738 is 837286552.

It is a happy number.

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., 254306809 + 1375929 = 15947^2 + 1173^2 .

It is a super-2 number, since 2×255682738² = 130747325022353288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63920683 + ... + 63920686.

Almost surely, 2^255682738 is an apocalyptic number.

255682738 is a deficient number, since it is larger than the sum of its proper divisors (127841372).

255682738 is a wasteful number, since it uses less digits than its factorization.

255682738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127841371.

The product of its digits is 806400, while the sum is 46.

The square root of 255682738 is about 15990.0824888429. The cubic root of 255682738 is about 634.6980092128.

The spelling of 255682738 in words is "two hundred fifty-five million, six hundred eighty-two thousand, seven hundred thirty-eight".