822742000 has 40 divisors (see below), whose sum is σ = 1989394992. Its totient is φ = 329096000.

The previous prime is 822741991. The next prime is 822742007. The reversal of 822742000 is 247228.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822742007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203686 + ... + 207685.

Almost surely, 2^822742000 is an apocalyptic number.

822742000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

822742000 is an abundant number, since it is smaller than the sum of its proper divisors (1166652992).

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

822742000 is a wasteful number, since it uses less digits than its factorization.

822742000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411394 (or 411378 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 822742000 is about 28683.4795657710. The cubic root of 822742000 is about 937.0322881823.

Adding to 822742000 its reverse (247228), we get a palindrome (822989228).

The spelling of 822742000 in words is "eight hundred twenty-two million, seven hundred forty-two thousand".