91822130 has 32 divisors (see below), whose sum is σ = 168067440. Its totient is φ = 36115200.

The previous prime is 91822109. The next prime is 91822261. The reversal of 91822130 is 3122819.

It can be written as a sum of positive squares in 8 ways, for example, as 87590881 + 4231249 = 9359^2 + 2057^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91822130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231092 + ... + 231488.

Almost surely, 2^91822130 is an apocalyptic number.

91822130 is a deficient number, since it is larger than the sum of its proper divisors (76245310).

91822130 is a wasteful number, since it uses less digits than its factorization.

91822130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 91822130 is about 9582.3864459747. The cubic root of 91822130 is about 451.1446251445.

Adding to 91822130 its reverse (3122819), we get a palindrome (94944949).

The spelling of 91822130 in words is "ninety-one million, eight hundred twenty-two thousand, one hundred thirty".