73136740 has 12 divisors (see below), whose sum is σ = 153587196. Its totient is φ = 29254688.

The previous prime is 73136689. The next prime is 73136741. The reversal of 73136740 is 4763137.

It can be written as a sum of positive squares in 2 ways, for example, as 26378496 + 46758244 = 5136^2 + 6838^2 .

It is not an unprimeable number, because it can be changed into a prime (73136741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1828399 + ... + 1828438.

It is an arithmetic number, because the mean of its divisors is an integer number (12798933).

Almost surely, 2^73136740 is an apocalyptic number.

It is an amenable number.

73136740 is an abundant number, since it is smaller than the sum of its proper divisors (80450456).

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

73136740 is a wasteful number, since it uses less digits than its factorization.

73136740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656846 (or 3656844 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 73136740 is about 8552.0021047706. The cubic root of 73136740 is about 418.1947079432.

Adding to 73136740 its reverse (4763137), we get a palindrome (77899877).

The spelling of 73136740 in words is "seventy-three million, one hundred thirty-six thousand, seven hundred forty".