1022894840 has 64 divisors (see below), whose sum is σ = 2564213760. Its totient is φ = 364040320.

The previous prime is 1022894839. The next prime is 1022894863. The reversal of 1022894840 is 484982201.

It is a junction number, because it is equal to n+sod(n) for n = 1022894794 and 1022894803.

It is a congruent number.

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, 4052 + ... + 45411.

It is an arithmetic number, because the mean of its divisors is an integer number (40065840).

Almost surely, 2^1022894840 is an apocalyptic number.

1022894840 is a gapful number since it is divisible by the number (10) 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 1022894840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282106880).

1022894840 is an abundant number, since it is smaller than the sum of its proper divisors (1541318920).

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

1022894840 is a wasteful number, since it uses less digits than its factorization.

1022894840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49532 (or 49528 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 1022894840 is about 31982.7272132944. The cubic root of 1022894840 is about 1007.5741014855.

The spelling of 1022894840 in words is "one billion, twenty-two million, eight hundred ninety-four thousand, eight hundred forty".