70347438 has 72 divisors (see below), whose sum is σ = 181183392. Its totient is φ = 19660032.

The previous prime is 70347437. The next prime is 70347449. The reversal of 70347438 is 83474307.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70347437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40606 + ... + 42302.

It is an arithmetic number, because the mean of its divisors is an integer number (2516436).

Almost surely, 2^70347438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70347438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90591696).

70347438 is an abundant number, since it is smaller than the sum of its proper divisors (110835954).

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

70347438 is a wasteful number, since it uses less digits than its factorization.

70347438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 1756 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 70347438 is about 8387.3379567059. The cubic root of 70347438 is about 412.8092578936.

The spelling of 70347438 in words is "seventy million, three hundred forty-seven thousand, four hundred thirty-eight".