73039220 has 24 divisors (see below), whose sum is σ = 153774600. Its totient is φ = 29140992.

The previous prime is 73039207. The next prime is 73039229. The reversal of 73039220 is 2293037.

It can be written as a sum of positive squares in 4 ways, for example, as 5207524 + 67831696 = 2282^2 + 8236^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73039220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73039229) 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, 3716 + ... + 12644.

It is an arithmetic number, because the mean of its divisors is an integer number (6407275).

Almost surely, 2^73039220 is an apocalyptic number.

It is an amenable number.

73039220 is an abundant number, since it is smaller than the sum of its proper divisors (80735380).

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

73039220 is a wasteful number, since it uses less digits than its factorization.

73039220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347 (or 9345 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 73039220 is about 8546.2986140200. The cubic root of 73039220 is about 418.0087526688.

The spelling of 73039220 in words is "seventy-three million, thirty-nine thousand, two hundred twenty".