70838240 has 72 divisors (see below), whose sum is σ = 184002840. Its totient is φ = 25752320.

The previous prime is 70838237. The next prime is 70838267. The reversal of 70838240 is 4283807.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 70838197 and 70838206.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17531 + ... + 21189.

It is an arithmetic number, because the mean of its divisors is an integer number (2555595).

Almost surely, 2^70838240 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 70838240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92001420).

70838240 is an abundant number, since it is smaller than the sum of its proper divisors (113164600).

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

70838240 is a wasteful number, since it uses less digits than its factorization.

70838240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696 (or 3677 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 70838240 is about 8416.5456096905. The cubic root of 70838240 is about 413.7670669569.

The spelling of 70838240 in words is "seventy million, eight hundred thirty-eight thousand, two hundred forty".