73906812 has 72 divisors (see below), whose sum is σ = 214419296. Its totient is φ = 21026304.

The previous prime is 73906801. The next prime is 73906813. The reversal of 73906812 is 21860937.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73906813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78408 + ... + 79344.

Almost surely, 2^73906812 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 73906812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107209648).

73906812 is an abundant number, since it is smaller than the sum of its proper divisors (140512484).

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

73906812 is a wasteful number, since it uses less digits than its factorization.

73906812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 73906812 is about 8596.9071182606. The cubic root of 73906812 is about 419.6573395613.

The spelling of 73906812 in words is "seventy-three million, nine hundred six thousand, eight hundred twelve".