73456378 has 4 divisors (see below), whose sum is σ = 110184570. Its totient is φ = 36728188.

The previous prime is 73456367. The next prime is 73456381. The reversal of 73456378 is 87365437.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 70610409 + 2845969 = 8403^2 + 1687^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18364093 + ... + 18364096.

Almost surely, 2^73456378 is an apocalyptic number.

73456378 is a deficient number, since it is larger than the sum of its proper divisors (36728192).

73456378 is a wasteful number, since it uses less digits than its factorization.

73456378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36728191.

The product of its digits is 423360, while the sum is 43.

The square root of 73456378 is about 8570.6696354486. The cubic root of 73456378 is about 418.8030508863.

The spelling of 73456378 in words is "seventy-three million, four hundred fifty-six thousand, three hundred seventy-eight".