70543840 has 48 divisors (see below), whose sum is σ = 168799680. Its totient is φ = 27855360.

The previous prime is 70543813. The next prime is 70543843. The reversal of 70543840 is 4834507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70543843) by changing a digit.

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, 9850 + ... + 15430.

It is an arithmetic number, because the mean of its divisors is an integer number (3516660).

Almost surely, 2^70543840 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 70543840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84399840).

70543840 is an abundant number, since it is smaller than the sum of its proper divisors (98255840).

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

70543840 is a wasteful number, since it uses less digits than its factorization.

70543840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5675 (or 5667 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 70543840 is about 8399.0380401567. The cubic root of 70543840 is about 413.1930730015.

The spelling of 70543840 in words is "seventy million, five hundred forty-three thousand, eight hundred forty".