73705212 has 144 divisors (see below), whose sum is σ = 223641600. Its totient is φ = 20448288.

The previous prime is 73705207. The next prime is 73705223. The reversal of 73705212 is 21250737.

73705212 is a `hidden beast` number, since 73 + 70 + 521 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 580293 + ... + 580419.

Almost surely, 2^73705212 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 73705212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111820800).

73705212 is an abundant number, since it is smaller than the sum of its proper divisors (149936388).

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

73705212 is a wasteful number, since it uses less digits than its factorization.

73705212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 73705212 is about 8585.1739644576. The cubic root of 73705212 is about 419.2754173378.

Adding to 73705212 its reverse (21250737), we get a palindrome (94955949).

The spelling of 73705212 in words is "seventy-three million, seven hundred five thousand, two hundred twelve".