73091240 has 64 divisors (see below), whose sum is σ = 174960000. Its totient is φ = 27419392.

The previous prime is 73091231. The next prime is 73091257. The reversal of 73091240 is 4219037.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48011 + ... + 49509.

It is an arithmetic number, because the mean of its divisors is an integer number (2733750).

Almost surely, 2^73091240 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 73091240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87480000).

73091240 is an abundant number, since it is smaller than the sum of its proper divisors (101868760).

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

73091240 is a wasteful number, since it uses less digits than its factorization.

73091240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 73091240 is about 8549.3414951094. The cubic root of 73091240 is about 418.1079671958.

The spelling of 73091240 in words is "seventy-three million, ninety-one thousand, two hundred forty".