1022340440 has 64 divisors (see below), whose sum is σ = 2514447360. Its totient is φ = 371009920.

The previous prime is 1022340439. The next prime is 1022340457. The reversal of 1022340440 is 440432201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245657 + ... + 249783.

It is an arithmetic number, because the mean of its divisors is an integer number (39288240).

Almost surely, 2^1022340440 is an apocalyptic number.

1022340440 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 1022340440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257223680).

1022340440 is an abundant number, since it is smaller than the sum of its proper divisors (1492106920).

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

1022340440 is a wasteful number, since it uses less digits than its factorization.

1022340440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712 (or 4708 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1022340440 is about 31974.0588602698. The cubic root of 1022340440 is about 1007.3920364908.

Adding to 1022340440 its reverse (440432201), we get a palindrome (1462772641).

The spelling of 1022340440 in words is "one billion, twenty-two million, three hundred forty thousand, four hundred forty".