73136378 has 32 divisors (see below), whose sum is σ = 132464640. Its totient is φ = 29620080.

The previous prime is 73136369. The next prime is 73136381. The reversal of 73136378 is 87363137.

It is a happy number.

It is a super-4 number, since 4×73136378⁴ (a number of 33 digits) contains 4444 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16703 + ... + 20621.

It is an arithmetic number, because the mean of its divisors is an integer number (4139520).

Almost surely, 2^73136378 is an apocalyptic number.

73136378 is a deficient number, since it is larger than the sum of its proper divisors (59328262).

73136378 is a wasteful number, since it uses less digits than its factorization.

73136378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002.

The product of its digits is 63504, while the sum is 38.

The square root of 73136378 is about 8551.9809401097. The cubic root of 73136378 is about 418.1940179720.

The spelling of 73136378 in words is "seventy-three million, one hundred thirty-six thousand, three hundred seventy-eight".