70041840 has 160 divisors (see below), whose sum is σ = 242770176. Its totient is φ = 16558080.

The previous prime is 70041827. The next prime is 70041841. The reversal of 70041840 is 4814007.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 70041840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70041841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113212 + ... + 113828.

Almost surely, 2^70041840 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 70041840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121385088).

70041840 is an abundant number, since it is smaller than the sum of its proper divisors (172728336).

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

70041840 is a wasteful number, since it uses less digits than its factorization.

70041840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 681 counting only the distinct ones).

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

The square root of 70041840 is about 8369.1003100692. The cubic root of 70041840 is about 412.2106253298.

Adding to 70041840 its reverse (4814007), we get a palindrome (74855847).

The spelling of 70041840 in words is "seventy million, forty-one thousand, eight hundred forty".