73226240 has 48 divisors (see below), whose sum is σ = 175724640. Its totient is φ = 29286400.

The previous prime is 73226233. The next prime is 73226269. The reversal of 73226240 is 4262237.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6665 + ... + 13815.

It is an arithmetic number, because the mean of its divisors is an integer number (3660930).

Almost surely, 2^73226240 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 73226240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87862320).

73226240 is an abundant number, since it is smaller than the sum of its proper divisors (102498400).

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

73226240 is an equidigital number, since it uses as much as digits as its factorization.

73226240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7178 (or 7158 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 73226240 is about 8557.2331977106. The cubic root of 73226240 is about 418.3652249284.

Adding to 73226240 its reverse (4262237), we get a palindrome (77488477).

The spelling of 73226240 in words is "seventy-three million, two hundred twenty-six thousand, two hundred forty".