73340140 has 24 divisors (see below), whose sum is σ = 155543472. Its totient is φ = 29044800.

The previous prime is 73340083. The next prime is 73340147. The reversal of 73340140 is 4104337.

It is a happy number.

It is a super-2 number, since 2×73340140² = 10757552270439200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73340147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16134 + ... + 20173.

It is an arithmetic number, because the mean of its divisors is an integer number (6480978).

Almost surely, 2^73340140 is an apocalyptic number.

It is an amenable number.

73340140 is an abundant number, since it is smaller than the sum of its proper divisors (82203332).

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

73340140 is a wasteful number, since it uses less digits than its factorization.

73340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36417 (or 36415 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 73340140 is about 8563.8858002661. The cubic root of 73340140 is about 418.5820284209.

Adding to 73340140 its reverse (4104337), we get a palindrome (77444477).

The spelling of 73340140 in words is "seventy-three million, three hundred forty thousand, one hundred forty".