73127140 has 48 divisors (see below), whose sum is σ = 160634880. Its totient is φ = 27930240.

The previous prime is 73127107. The next prime is 73127147. The reversal of 73127140 is 4172137.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (73127147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48234 + ... + 49726.

It is an arithmetic number, because the mean of its divisors is an integer number (3346560).

Almost surely, 2^73127140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73127140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80317440).

73127140 is an abundant number, since it is smaller than the sum of its proper divisors (87507740).

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

73127140 is a wasteful number, since it uses less digits than its factorization.

73127140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 73127140 is about 8551.4408142722. The cubic root of 73127140 is about 418.1764095938.

Adding to 73127140 its reverse (4172137), we get a palindrome (77299277).

The spelling of 73127140 in words is "seventy-three million, one hundred twenty-seven thousand, one hundred forty".