70704438 has 64 divisors (see below), whose sum is σ = 171942912. Its totient is φ = 18944640.

The previous prime is 70704419. The next prime is 70704443. The reversal of 70704438 is 83440707.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 70704399 and 70704408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50508 + ... + 51888.

It is an arithmetic number, because the mean of its divisors is an integer number (2686608).

Almost surely, 2^70704438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70704438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85971456).

70704438 is an abundant number, since it is smaller than the sum of its proper divisors (101238474).

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

70704438 is a wasteful number, since it uses less digits than its factorization.

70704438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 70704438 is about 8408.5931046757. The cubic root of 70704438 is about 413.5063896971.

The spelling of 70704438 in words is "seventy million, seven hundred four thousand, four hundred thirty-eight".