1022144340 has 96 divisors (see below), whose sum is σ = 3275483904. Its totient is φ = 233303040.

The previous prime is 1022144323. The next prime is 1022144359. The reversal of 1022144340 is 434412201.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417520 + ... + 419960.

It is an arithmetic number, because the mean of its divisors is an integer number (34119624).

Almost surely, 2^1022144340 is an apocalyptic number.

1022144340 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 1022144340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1637741952).

1022144340 is an abundant number, since it is smaller than the sum of its proper divisors (2253339564).

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

1022144340 is a wasteful number, since it uses less digits than its factorization.

1022144340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457 (or 3455 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1022144340 is about 31970.9921647734. The cubic root of 1022144340 is about 1007.3276214803.

Adding to 1022144340 its reverse (434412201), we get a palindrome (1456556541).

The spelling of 1022144340 in words is "one billion, twenty-two million, one hundred forty-four thousand, three hundred forty".