70212736 has 64 divisors (see below), whose sum is σ = 155986560. Its totient is φ = 31206400.

The previous prime is 70212707. The next prime is 70212743. The reversal of 70212736 is 63721207.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65646 + ... + 66706.

It is an arithmetic number, because the mean of its divisors is an integer number (2437290).

Almost surely, 2^70212736 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 70212736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77993280).

70212736 is an abundant number, since it is smaller than the sum of its proper divisors (85773824).

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

70212736 is a wasteful number, since it uses less digits than its factorization.

70212736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 70212736 is about 8379.3040283785. The cubic root of 70212736 is about 412.5456057321.

The spelling of 70212736 in words is "seventy million, two hundred twelve thousand, seven hundred thirty-six".