70456320 has 264 divisors, whose sum is σ = 268238880. Its totient is φ = 16957440.

The previous prime is 70456319. The next prime is 70456333. The reversal of 70456320 is 2365407.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (264).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 506811 + ... + 506949.

Almost surely, 2^70456320 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 70456320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134119440).

70456320 is an abundant number, since it is smaller than the sum of its proper divisors (197782560).

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

70456320 is a wasteful number, since it uses less digits than its factorization.

70456320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 70456320 is about 8393.8263027061. The cubic root of 70456320 is about 413.0221267119.

The spelling of 70456320 in words is "seventy million, four hundred fifty-six thousand, three hundred twenty".