74378 has 4 divisors (see below), whose sum is σ = 111570. Its totient is φ = 37188.

The previous prime is 74377. The next prime is 74381. The reversal of 74378 is 87347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87347 = 13 ⋅6719.

It can be written as a sum of positive squares in only one way, i.e., 49729 + 24649 = 223^2 + 157^2 .

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 74378.

It is not an unprimeable number, because it can be changed into a prime (74377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18593 + ... + 18596.

2⁷⁴³⁷⁸ is an apocalyptic number.

74378 is a deficient number, since it is larger than the sum of its proper divisors (37192).

74378 is a wasteful number, since it uses less digits than its factorization.

74378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37191.

The product of its digits is 4704, while the sum is 29.

The square root of 74378 is about 272.7233030014. The cubic root of 74378 is about 42.0547283526.

It can be divided in two parts, 74 and 378, that multiplied together give a palindrome (27972).

The spelling of 74378 in words is "seventy-four thousand, three hundred seventy-eight".