70157224 has 8 divisors (see below), whose sum is σ = 131544810. Its totient is φ = 35078608.

The previous prime is 70157221. The next prime is 70157231. The reversal of 70157224 is 42275107.

It can be written as a sum of positive squares in only one way, i.e., 51581124 + 18576100 = 7182^2 + 4310^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 70157192 and 70157201.

It is not an unprimeable number, because it can be changed into a prime (70157221) 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 as a sum of consecutive naturals, namely, 4384819 + ... + 4384834.

Almost surely, 2^70157224 is an apocalyptic number.

It is an amenable number.

70157224 is a deficient number, since it is larger than the sum of its proper divisors (61387586).

70157224 is a wasteful number, since it uses less digits than its factorization.

70157224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8769659 (or 8769655 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 70157224 is about 8375.9909264516. The cubic root of 70157224 is about 412.4368540010.

The spelling of 70157224 in words is "seventy million, one hundred fifty-seven thousand, two hundred twenty-four".