70122890 has 16 divisors (see below), whose sum is σ = 127059840. Its totient is φ = 27862800.

The previous prime is 70122853. The next prime is 70122907. The reversal of 70122890 is 9822107.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21710 + ... + 24729.

It is an arithmetic number, because the mean of its divisors is an integer number (7941240).

Almost surely, 2^70122890 is an apocalyptic number.

70122890 is a deficient number, since it is larger than the sum of its proper divisors (56936950).

70122890 is a wasteful number, since it uses less digits than its factorization.

70122890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46597.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 70122890 is about 8373.9411270918. The cubic root of 70122890 is about 412.3695626765.

Adding to 70122890 its reverse (9822107), we get a palindrome (79944997).

The spelling of 70122890 in words is "seventy million, one hundred twenty-two thousand, eight hundred ninety".