73648478 has 4 divisors (see below), whose sum is σ = 110472720. Its totient is φ = 36824238.

The previous prime is 73648469. The next prime is 73648489. The reversal of 73648478 is 87484637.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87484637 = 5791 ⋅15107.

It is a Curzon number.

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, 18412118 + ... + 18412121.

It is an arithmetic number, because the mean of its divisors is an integer number (27618180).

Almost surely, 2^73648478 is an apocalyptic number.

73648478 is a deficient number, since it is larger than the sum of its proper divisors (36824242).

73648478 is a wasteful number, since it uses less digits than its factorization.

73648478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36824241.

The product of its digits is 903168, while the sum is 47.

The square root of 73648478 is about 8581.8691437239. The cubic root of 73648478 is about 419.1678117524.

The spelling of 73648478 in words is "seventy-three million, six hundred forty-eight thousand, four hundred seventy-eight".