1022513440 has 48 divisors (see below), whose sum is σ = 2601515448. Its totient is φ = 377542656.

The previous prime is 1022513411. The next prime is 1022513441. The reversal of 1022513440 is 443152201.

It can be written as a sum of positive squares in 4 ways, for example, as 720170896 + 302342544 = 26836^2 + 17388^2 .

It is not an unprimeable number, because it can be changed into a prime (1022513441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243717 + ... + 247876.

Almost surely, 2^1022513440 is an apocalyptic number.

1022513440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022513440 is an abundant number, since it is smaller than the sum of its proper divisors (1579002008).

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

1022513440 is a wasteful number, since it uses less digits than its factorization.

1022513440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491621 (or 491613 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1022513440 is about 31976.7640639262. The cubic root of 1022513440 is about 1007.4488567651.

Adding to 1022513440 its reverse (443152201), we get a palindrome (1465665641).

The spelling of 1022513440 in words is "one billion, twenty-two million, five hundred thirteen thousand, four hundred forty".