70210890 has 72 divisors (see below), whose sum is σ = 192750948. Its totient is φ = 17729280.

The previous prime is 70210879. The next prime is 70210897. The reversal of 70210890 is 9801207.

It can be written as a sum of positive squares in 2 ways, for example, as 70207641 + 3249 = 8379^2 + 57^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70210897) 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 35 ways as a sum of consecutive naturals, for example, 31410 + ... + 33570.

Almost surely, 2^70210890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70210890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96375474).

70210890 is an abundant number, since it is smaller than the sum of its proper divisors (122540058).

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

70210890 is a wasteful number, since it uses less digits than its factorization.

70210890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212 (or 2190 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 70210890 is about 8379.1938753081. The cubic root of 70210890 is about 412.5419902158.

The spelling of 70210890 in words is "seventy million, two hundred ten thousand, eight hundred ninety".