538378 has 4 divisors (see below), whose sum is σ = 807570. Its totient is φ = 269188.

The previous prime is 538367. The next prime is 538397. The reversal of 538378 is 873835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873835 = 5 ⋅174767.

It can be written as a sum of positive squares in only one way, i.e., 537289 + 1089 = 733^2 + 33^2 .

It is a d-powerful number, because it can be written as 5⁴ + 3⁸ + 3⁸ + 8⁶ + 7³ + 8⁶ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134593 + ... + 134596.

2⁵³⁸³⁷⁸ is an apocalyptic number.

538378 is a deficient number, since it is larger than the sum of its proper divisors (269192).

538378 is a wasteful number, since it uses less digits than its factorization.

538378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269191.

The product of its digits is 20160, while the sum is 34.

The square root of 538378 is about 733.7424616308. The cubic root of 538378 is about 81.3509136651.

It can be divided in two parts, 5 and 38378, that multiplied together give a triangular number (191890 = T₆₁₉).

The spelling of 538378 in words is "five hundred thirty-eight thousand, three hundred seventy-eight".