70535520 has 288 divisors, whose sum is σ = 270545184. Its totient is φ = 16588800.

The previous prime is 70535513. The next prime is 70535537. The reversal of 70535520 is 2553507.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 966204 + ... + 966276.

It is an arithmetic number, because the mean of its divisors is an integer number (939393).

Almost surely, 2^70535520 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 70535520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135272592).

70535520 is an abundant number, since it is smaller than the sum of its proper divisors (200009664).

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

70535520 is a wasteful number, since it uses less digits than its factorization.

70535520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 70535520 is about 8398.5427307361. The cubic root of 70535520 is about 413.1768282496.

The spelling of 70535520 in words is "seventy million, five hundred thirty-five thousand, five hundred twenty".