73012212 has 384 divisors, whose sum is σ = 270950400. Its totient is φ = 16422912.

The previous prime is 73012157. The next prime is 73012241. The reversal of 73012212 is 21221037.

It is a super-2 number, since 2×73012212² = 10661566202265888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3174433 + ... + 3174455.

It is an arithmetic number, because the mean of its divisors is an integer number (705600).

Almost surely, 2^73012212 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 73012212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135475200).

73012212 is an abundant number, since it is smaller than the sum of its proper divisors (197938188).

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

73012212 is a wasteful number, since it uses less digits than its factorization.

73012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 73012212 is about 8544.7183686766. The cubic root of 73012212 is about 417.9572234027.

Adding to 73012212 its reverse (21221037), we get a palindrome (94233249).

The spelling of 73012212 in words is "seventy-three million, twelve thousand, two hundred twelve".