73378818 has 32 divisors (see below), whose sum is σ = 166147200. Its totient is φ = 23997168.

The previous prime is 73378813. The next prime is 73378853. The reversal of 73378818 is 81887337.

It is a super-4 number, since 4×73378818⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (73378813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9958 + ... + 15681.

It is an arithmetic number, because the mean of its divisors is an integer number (5192100).

Almost surely, 2^73378818 is an apocalyptic number.

73378818 is an abundant number, since it is smaller than the sum of its proper divisors (92768382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73378818 is a wasteful number, since it uses less digits than its factorization.

73378818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25703 (or 25697 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 73378818 is about 8566.1437064761. The cubic root of 73378818 is about 418.6555991852.

The spelling of 73378818 in words is "seventy-three million, three hundred seventy-eight thousand, eight hundred eighteen".