70117920 has 96 divisors (see below), whose sum is σ = 245427840. Its totient is φ = 18696960.

The previous prime is 70117903. The next prime is 70117921. The reversal of 70117920 is 2971107.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (70117921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3796 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (2556540).

Almost surely, 2^70117920 is an apocalyptic number.

It is an amenable number.

70117920 is an abundant number, since it is smaller than the sum of its proper divisors (175309920).

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

70117920 is a wasteful number, since it uses less digits than its factorization.

70117920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16255 (or 16241 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 70117920 is about 8373.6443678962. The cubic root of 70117920 is about 412.3598201367.

The spelling of 70117920 in words is "seventy million, one hundred seventeen thousand, nine hundred twenty".