70448440 has 32 divisors (see below), whose sum is σ = 159356160. Its totient is φ = 28028800.

The previous prime is 70448393. The next prime is 70448489. The reversal of 70448440 is 4484407.

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 7 ways as a sum of consecutive naturals, for example, 3030 + ... + 12250.

It is an arithmetic number, because the mean of its divisors is an integer number (4979880).

Almost surely, 2^70448440 is an apocalyptic number.

It is an amenable number.

70448440 is an abundant number, since it is smaller than the sum of its proper divisors (88907720).

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

70448440 is a wasteful number, since it uses less digits than its factorization.

70448440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9423 (or 9419 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 70448440 is about 8393.3568969751. The cubic root of 70448440 is about 413.0067283502.

The spelling of 70448440 in words is "seventy million, four hundred forty-eight thousand, four hundred forty".