70809824 has 72 divisors (see below), whose sum is σ = 150504480. Its totient is φ = 32772608.

The previous prime is 70809803. The next prime is 70809839. The reversal of 70809824 is 42890807.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 795572 + ... + 795660.

It is an arithmetic number, because the mean of its divisors is an integer number (2090340).

Almost surely, 2^70809824 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 70809824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75252240).

70809824 is an abundant number, since it is smaller than the sum of its proper divisors (79694656).

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

70809824 is a wasteful number, since it uses less digits than its factorization.

70809824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 70809824 is about 8414.8573368774. The cubic root of 70809824 is about 413.7117334842.

The spelling of 70809824 in words is "seventy million, eight hundred nine thousand, eight hundred twenty-four".