73478 has 4 divisors (see below), whose sum is σ = 110220. Its totient is φ = 36738.

The previous prime is 73477. The next prime is 73483. The reversal of 73478 is 87437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87437 = 7 ⋅12491.

It is a self number, because there is not a number n which added to its sum of digits gives 73478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18368 + ... + 18371.

It is an arithmetic number, because the mean of its divisors is an integer number (27555).

2⁷³⁴⁷⁸ is an apocalyptic number.

73478 is a deficient number, since it is larger than the sum of its proper divisors (36742).

73478 is a wasteful number, since it uses less digits than its factorization.

73478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36741.

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

The square root of 73478 is about 271.0682570867. The cubic root of 73478 is about 41.8844138633.

The spelling of 73478 in words is "seventy-three thousand, four hundred seventy-eight".