70040784 has 80 divisors (see below), whose sum is σ = 199362240. Its totient is φ = 21012480.

The previous prime is 70040759. The next prime is 70040791. The reversal of 70040784 is 48704007.

It is a super-2 number, since 2×70040784² = 9811422846669312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56944 + ... + 58160.

It is an arithmetic number, because the mean of its divisors is an integer number (2492028).

Almost surely, 2^70040784 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 70040784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99681120).

70040784 is an abundant number, since it is smaller than the sum of its proper divisors (129321456).

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

70040784 is a wasteful number, since it uses less digits than its factorization.

70040784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 70040784 is about 8369.0372206127. The cubic root of 70040784 is about 412.2085537270.

The spelling of 70040784 in words is "seventy million, forty thousand, seven hundred eighty-four".