70212072 has 64 divisors (see below), whose sum is σ = 201801600. Its totient is φ = 19941120.

The previous prime is 70212067. The next prime is 70212073. The reversal of 70212072 is 27021207.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (70212073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29254 + ... + 31562.

It is an arithmetic number, because the mean of its divisors is an integer number (3153150).

Almost surely, 2^70212072 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 70212072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100900800).

70212072 is an abundant number, since it is smaller than the sum of its proper divisors (131589528).

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

70212072 is a wasteful number, since it uses less digits than its factorization.

70212072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506 (or 2502 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 70212072 is about 8379.2644068558. The cubic root of 70212072 is about 412.5443052503.

Adding to 70212072 its reverse (27021207), we get a palindrome (97233279).

The spelling of 70212072 in words is "seventy million, two hundred twelve thousand, seventy-two".