70727520 has 96 divisors (see below), whose sum is σ = 230519520. Its totient is φ = 18206720.

The previous prime is 70727513. The next prime is 70727539. The reversal of 70727520 is 2572707.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 11380 + ... + 16460.

It is an arithmetic number, because the mean of its divisors is an integer number (2401245).

Almost surely, 2^70727520 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 70727520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115259760).

70727520 is an abundant number, since it is smaller than the sum of its proper divisors (159792000).

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

70727520 is a wasteful number, since it uses less digits than its factorization.

70727520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128 (or 5120 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 70727520 is about 8409.9655171707. The cubic root of 70727520 is about 413.5513822337.

The spelling of 70727520 in words is "seventy million, seven hundred twenty-seven thousand, five hundred twenty".