70446320 has 60 divisors (see below), whose sum is σ = 190539144. Its totient is φ = 24151680.

The previous prime is 70446301. The next prime is 70446329. The reversal of 70446320 is 2364407.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 70446320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70446329) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5066 + ... + 12905.

Almost surely, 2^70446320 is an apocalyptic number.

70446320 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70446320 is an abundant number, since it is smaller than the sum of its proper divisors (120092824).

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

70446320 is a wasteful number, since it uses less digits than its factorization.

70446320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17998 (or 17985 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 70446320 is about 8393.2306056726. The cubic root of 70446320 is about 413.0025854478.

The spelling of 70446320 in words is "seventy million, four hundred forty-six thousand, three hundred twenty".