70543872 has 200 divisors, whose sum is σ = 241624416. Its totient is φ = 20155392.

The previous prime is 70543861. The next prime is 70543909. The reversal of 70543872 is 27834507.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a nialpdrome in base 6.

It is a zygodrome in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10077693 + ... + 10077699.

Almost surely, 2^70543872 is an apocalyptic number.

70543872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70543872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120812208).

70543872 is an abundant number, since it is smaller than the sum of its proper divisors (171080544).

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

70543872 is an frugal number, since it uses more digits than its factorization.

70543872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52 (or 12 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 70543872 is about 8399.0399451366. The cubic root of 70543872 is about 413.1931354788.

The spelling of 70543872 in words is "seventy million, five hundred forty-three thousand, eight hundred seventy-two".