84070140 has 192 divisors, whose sum is σ = 303464448. Its totient is φ = 16876800.

The previous prime is 84070099. The next prime is 84070157. The reversal of 84070140 is 4107048.

It is a self number, because there is not a number n which added to its sum of digits gives 84070140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142927 + ... + 143513.

It is an arithmetic number, because the mean of its divisors is an integer number (1580544).

Almost surely, 2^84070140 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 84070140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151732224).

84070140 is an abundant number, since it is smaller than the sum of its proper divisors (219394308).

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

84070140 is a wasteful number, since it uses less digits than its factorization.

84070140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 84070140 is about 9168.9770421787. The cubic root of 84070140 is about 438.0737766927.

Adding to 84070140 its reverse (4107048), we get a palindrome (88177188).

The spelling of 84070140 in words is "eighty-four million, seventy thousand, one hundred forty".