70145424 has 90 divisors (see below), whose sum is σ = 202959666. Its totient is φ = 22602240.

The previous prime is 70145407. The next prime is 70145429. The reversal of 70145424 is 42454107.

It can be written as a sum of positive squares in 3 ways, for example, as 6656400 + 63489024 = 2580^2 + 7968^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70145429) 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 17 ways as a sum of consecutive naturals, for example, 643482 + ... + 643590.

Almost surely, 2^70145424 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 70145424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101479833).

70145424 is an abundant number, since it is smaller than the sum of its proper divisors (132814242).

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

70145424 is a wasteful number, since it uses less digits than its factorization.

70145424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 70145424 is about 8375.2865025622. The cubic root of 70145424 is about 412.4137296170.

The spelling of 70145424 in words is "seventy million, one hundred forty-five thousand, four hundred twenty-four".