71620122 has 16 divisors (see below), whose sum is σ = 163703232. Its totient is φ = 20462880.

The previous prime is 71620117. The next prime is 71620147. The reversal of 71620122 is 22102617.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 852579 + ... + 852662.

It is an arithmetic number, because the mean of its divisors is an integer number (10231452).

Almost surely, 2^71620122 is an apocalyptic number.

71620122 is an abundant number, since it is smaller than the sum of its proper divisors (92083110).

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

71620122 is a wasteful number, since it uses less digits than its factorization.

71620122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705253.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 71620122 is about 8462.8672446163. The cubic root of 71620122 is about 415.2838277103.

Adding to 71620122 its reverse (22102617), we get a palindrome (93722739).

The spelling of 71620122 in words is "seventy-one million, six hundred twenty thousand, one hundred twenty-two".