70812 has 36 divisors (see below), whose sum is σ = 205296. Its totient is φ = 20160.

The previous prime is 70793. The next prime is 70823. The reversal of 70812 is 21807.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112 + ... + 392.

2⁷⁰⁸¹² 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 70812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102648).

70812 is an abundant number, since it is smaller than the sum of its proper divisors (134484).

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

70812 is a wasteful number, since it uses less digits than its factorization.

70812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 70812 is about 266.1052423384. The cubic root of 70812 is about 41.3715971255.

The spelling of 70812 in words is "seventy thousand, eight hundred twelve".