70144380 has 168 divisors, whose sum is σ = 234671472. Its totient is φ = 17542656.

The previous prime is 70144369. The next prime is 70144381. The reversal of 70144380 is 8344107.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70144381) 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, 247719 + ... + 248001.

It is an arithmetic number, because the mean of its divisors is an integer number (1396854).

Almost surely, 2^70144380 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 70144380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117335736).

70144380 is an abundant number, since it is smaller than the sum of its proper divisors (164527092).

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

70144380 is a wasteful number, since it uses less digits than its factorization.

70144380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 70144380 is about 8375.2241761042. The cubic root of 70144380 is about 412.4116835721.

Adding to 70144380 its reverse (8344107), we get a palindrome (78488487).

The spelling of 70144380 in words is "seventy million, one hundred forty-four thousand, three hundred eighty".