70743840 has 96 divisors (see below), whose sum is σ = 234601920. Its totient is φ = 17869824.

The previous prime is 70743839. The next prime is 70743857. The reversal of 70743840 is 4834707.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5242 + ... + 12998.

It is an arithmetic number, because the mean of its divisors is an integer number (2443770).

Almost surely, 2^70743840 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 70743840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117300960).

70743840 is an abundant number, since it is smaller than the sum of its proper divisors (163858080).

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

70743840 is a wasteful number, since it uses less digits than its factorization.

70743840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7794 (or 7786 counting only the distinct ones).

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

The square root of 70743840 is about 8410.9357386678. The cubic root of 70743840 is about 413.5831880499.

The spelling of 70743840 in words is "seventy million, seven hundred forty-three thousand, eight hundred forty".