70207312 has 80 divisors (see below), whose sum is σ = 163259392. Its totient is φ = 28615680.

The previous prime is 70207309. The next prime is 70207321. The reversal of 70207312 is 21370207.

It is a zygodrome in base 3.

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, 253318 + ... + 253594.

Almost surely, 2^70207312 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 70207312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81629696).

70207312 is an abundant number, since it is smaller than the sum of its proper divisors (93052080).

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

70207312 is a wasteful number, since it uses less digits than its factorization.

70207312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 70207312 is about 8378.9803675626. The cubic root of 70207312 is about 412.5349822796.

Adding to 70207312 its reverse (21370207), we get a palindrome (91577519).

The spelling of 70207312 in words is "seventy million, two hundred seven thousand, three hundred twelve".