70243524 has 168 divisors, whose sum is σ = 212085720. Its totient is φ = 20155392.

The previous prime is 70243519. The next prime is 70243529. The reversal of 70243524 is 42534207.

It is an interprime number because it is at equal distance from previous prime (70243519) and next prime (70243529).

It can be written as a sum of positive squares in 4 ways, for example, as 13089924 + 57153600 = 3618^2 + 7560^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 (70243529) 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 55 ways as a sum of consecutive naturals, for example, 644382 + ... + 644490.

It is an arithmetic number, because the mean of its divisors is an integer number (1262415).

Almost surely, 2^70243524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70243524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106042860).

70243524 is an abundant number, since it is smaller than the sum of its proper divisors (141842196).

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

70243524 is a wasteful number, since it uses less digits than its factorization.

70243524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 70243524 is about 8381.1409724452. The cubic root of 70243524 is about 412.6058967789.

The spelling of 70243524 in words is "seventy million, two hundred forty-three thousand, five hundred twenty-four".