70145340 has 96 divisors (see below), whose sum is σ = 212459520. Its totient is φ = 17231616.

The previous prime is 70145333. The next prime is 70145347. The reversal of 70145340 is 4354107.

It is an interprime number because it is at equal distance from previous prime (70145333) and next prime (70145347).

It is a self number, because there is not a number n which added to its sum of digits gives 70145340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70145347) 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 31 ways as a sum of consecutive naturals, for example, 41349 + ... + 43011.

It is an arithmetic number, because the mean of its divisors is an integer number (2213120).

Almost surely, 2^70145340 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 70145340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106229760).

70145340 is an abundant number, since it is smaller than the sum of its proper divisors (142314180).

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

70145340 is a wasteful number, since it uses less digits than its factorization.

70145340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 70145340 is about 8375.2814878068. The cubic root of 70145340 is about 412.4135649935.

Adding to 70145340 its reverse (4354107), we get a palindrome (74499447).

The spelling of 70145340 in words is "seventy million, one hundred forty-five thousand, three hundred forty".