70807830 has 32 divisors (see below), whose sum is σ = 170229600. Its totient is φ = 18849792.

The previous prime is 70807801. The next prime is 70807831. The reversal of 70807830 is 3870807.

It is a junction number, because it is equal to n+sod(n) for n = 70807791 and 70807800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70807831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19606 + ... + 22934.

It is an arithmetic number, because the mean of its divisors is an integer number (5319675).

Almost surely, 2^70807830 is an apocalyptic number.

70807830 is an abundant number, since it is smaller than the sum of its proper divisors (99421770).

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

70807830 is a wasteful number, since it uses less digits than its factorization.

70807830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 70807830 is about 8414.7388551279. The cubic root of 70807830 is about 413.7078500826.

The spelling of 70807830 in words is "seventy million, eight hundred seven thousand, eight hundred thirty".