822261420 has 36 divisors (see below), whose sum is σ = 2494193520. Its totient is φ = 219269664.

The previous prime is 822261403. The next prime is 822261421. The reversal of 822261420 is 24162228.

It is a happy number.

822261420 is a `hidden beast` number, since 8 + 2 + 22 + 614 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×822261420² = 1352227685640832800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (822261421) 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 11 ways as a sum of consecutive naturals, for example, 2283880 + ... + 2284239.

Almost surely, 2^822261420 is an apocalyptic number.

It is an amenable number.

822261420 is an abundant number, since it is smaller than the sum of its proper divisors (1671932100).

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

822261420 is a wasteful number, since it uses less digits than its factorization.

822261420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568134 (or 4568129 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 822261420 is about 28675.1010460295. The cubic root of 822261420 is about 936.8498062355.

The spelling of 822261420 in words is "eight hundred twenty-two million, two hundred sixty-one thousand, four hundred twenty".