70144340 has 24 divisors (see below), whose sum is σ = 168346752. Its totient is φ = 24049440.

The previous prime is 70144297. The next prime is 70144367. The reversal of 70144340 is 4344107.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 250376 + ... + 250655.

It is an arithmetic number, because the mean of its divisors is an integer number (7014448).

Almost surely, 2^70144340 is an apocalyptic number.

70144340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70144340 is an abundant number, since it is smaller than the sum of its proper divisors (98202412).

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

70144340 is a wasteful number, since it uses less digits than its factorization.

70144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501047 (or 501045 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 70144340 is about 8375.2217881081. The cubic root of 70144340 is about 412.4116051792.

Adding to 70144340 its reverse (4344107), we get a palindrome (74488447).

The spelling of 70144340 in words is "seventy million, one hundred forty-four thousand, three hundred forty".