73007140 has 12 divisors (see below), whose sum is σ = 153315036. Its totient is φ = 29202848.

The previous prime is 73007117. The next prime is 73007161. The reversal of 73007140 is 4170037.

It can be written as a sum of positive squares in 2 ways, for example, as 46566976 + 26440164 = 6824^2 + 5142^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1825159 + ... + 1825198.

It is an arithmetic number, because the mean of its divisors is an integer number (12776253).

Almost surely, 2^73007140 is an apocalyptic number.

It is an amenable number.

73007140 is an abundant number, since it is smaller than the sum of its proper divisors (80307896).

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

73007140 is a wasteful number, since it uses less digits than its factorization.

73007140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650366 (or 3650364 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 73007140 is about 8544.4215719966. The cubic root of 73007140 is about 417.9475449847.

Adding to 73007140 its reverse (4170037), we get a palindrome (77177177).

The spelling of 73007140 in words is "seventy-three million, seven thousand, one hundred forty".