70591872 has 128 divisors (see below), whose sum is σ = 205632000. Its totient is φ = 21325824.

The previous prime is 70591849. The next prime is 70591883. The reversal of 70591872 is 27819507.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 70591872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394279 + ... + 394457.

It is an arithmetic number, because the mean of its divisors is an integer number (1606500).

Almost surely, 2^70591872 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 70591872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102816000).

70591872 is an abundant number, since it is smaller than the sum of its proper divisors (135040128).

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

70591872 is a wasteful number, since it uses less digits than its factorization.

70591872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 70591872 is about 8401.8969286703. The cubic root of 70591872 is about 413.2868302406.

The spelling of 70591872 in words is "seventy million, five hundred ninety-one thousand, eight hundred seventy-two".