73388220 has 48 divisors (see below), whose sum is σ = 207126528. Its totient is φ = 19414080.

The previous prime is 73388219. The next prime is 73388233. The reversal of 73388220 is 2288337.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2805 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (4315136).

Almost surely, 2^73388220 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 73388220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103563264).

73388220 is an abundant number, since it is smaller than the sum of its proper divisors (133738308).

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

73388220 is a wasteful number, since it uses less digits than its factorization.

73388220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9770 (or 9768 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 73388220 is about 8566.6924772633. The cubic root of 73388220 is about 418.6734791491.

The spelling of 73388220 in words is "seventy-three million, three hundred eighty-eight thousand, two hundred twenty".