1435220440 has 64 divisors (see below), whose sum is σ = 3371544000. Its totient is φ = 549158400.

The previous prime is 1435220419. The next prime is 1435220441. The reversal of 1435220440 is 440225341.

It is a happy number.

It is a super-2 number, since 2×1435220440² = 4119715422787587200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1435220441) 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 15 ways as a sum of consecutive naturals, for example, 120765 + ... + 132115.

It is an arithmetic number, because the mean of its divisors is an integer number (52680375).

Almost surely, 2^1435220440 is an apocalyptic number.

1435220440 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 1435220440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685772000).

1435220440 is an abundant number, since it is smaller than the sum of its proper divisors (1936323560).

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

1435220440 is a wasteful number, since it uses less digits than its factorization.

1435220440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500 (or 11496 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1435220440 is about 37884.3033458450. The cubic root of 1435220440 is about 1127.9924781116.

Adding to 1435220440 its reverse (440225341), we get a palindrome (1875445781).

The spelling of 1435220440 in words is "one billion, four hundred thirty-five million, two hundred twenty thousand, four hundred forty".