70087830 has 32 divisors (see below), whose sum is σ = 169448544. Its totient is φ = 18552576.

The previous prime is 70087817. The next prime is 70087837. The reversal of 70087830 is 3878007.

It is a junction number, because it is equal to n+sod(n) for n = 70087791 and 70087800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70087837) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4417 + ... + 12636.

It is an arithmetic number, because the mean of its divisors is an integer number (5295267).

Almost surely, 2^70087830 is an apocalyptic number.

70087830 is an abundant number, since it is smaller than the sum of its proper divisors (99360714).

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

70087830 is a wasteful number, since it uses less digits than its factorization.

70087830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17200.

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

The square root of 70087830 is about 8371.8474663601. The cubic root of 70087830 is about 412.3008257916.

The spelling of 70087830 in words is "seventy million, eighty-seven thousand, eight hundred thirty".