822299040 has 240 divisors, whose sum is σ = 2948454432. Its totient is φ = 215778816.

The previous prime is 822299029. The next prime is 822299041. The reversal of 822299040 is 40992228.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×822299040² = 1352351422369843200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 822298986 and 822299004.

It is not an unprimeable number, because it can be changed into a prime (822299041) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 867847 + ... + 868793.

Almost surely, 2^822299040 is an apocalyptic number.

822299040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822299040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474227216).

822299040 is an abundant number, since it is smaller than the sum of its proper divisors (2126155392).

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

822299040 is a wasteful number, since it uses less digits than its factorization.

822299040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 822299040 is about 28675.7570083163. The cubic root of 822299040 is about 936.8640935621.

The spelling of 822299040 in words is "eight hundred twenty-two million, two hundred ninety-nine thousand, forty".