1022232440 has 128 divisors (see below), whose sum is σ = 2553016320. Its totient is φ = 366643200.

The previous prime is 1022232437. The next prime is 1022232443. The reversal of 1022232440 is 442322201.

It is an interprime number because it is at equal distance from previous prime (1022232437) and next prime (1022232443).

It is a super-2 number, since 2×1022232440² = 2089918322776707200, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022232443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1496339 + ... + 1497021.

It is an arithmetic number, because the mean of its divisors is an integer number (19945440).

Almost surely, 2^1022232440 is an apocalyptic number.

1022232440 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 1022232440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276508160).

1022232440 is an abundant number, since it is smaller than the sum of its proper divisors (1530783880).

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

1022232440 is a wasteful number, since it uses less digits than its factorization.

1022232440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 809 counting only the distinct ones).

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

The square root of 1022232440 is about 31972.3699465648. The cubic root of 1022232440 is about 1007.3565616245.

Adding to 1022232440 its reverse (442322201), we get a palindrome (1464554641).

The spelling of 1022232440 in words is "one billion, twenty-two million, two hundred thirty-two thousand, four hundred forty".