70731248 has 20 divisors (see below), whose sum is σ = 156619440. Its totient is φ = 30313344.

The previous prime is 70731229. The next prime is 70731251. The reversal of 70731248 is 84213707.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 315653 + ... + 315876.

It is an arithmetic number, because the mean of its divisors is an integer number (7830972).

Almost surely, 2^70731248 is an apocalyptic number.

It is an amenable number.

70731248 is an abundant number, since it is smaller than the sum of its proper divisors (85888192).

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

70731248 is a wasteful number, since it uses less digits than its factorization.

70731248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631544 (or 631538 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 70731248 is about 8410.1871560626. The cubic root of 70731248 is about 413.5586481111.

The spelling of 70731248 in words is "seventy million, seven hundred thirty-one thousand, two hundred forty-eight".