1430022440 has 128 divisors (see below), whose sum is σ = 4041964800. Its totient is φ = 442337280.

The previous prime is 1430022379. The next prime is 1430022443. The reversal of 1430022440 is 442200341.

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

It is not an unprimeable number, because it can be changed into a prime (1430022443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420266 + ... + 423654.

It is an arithmetic number, because the mean of its divisors is an integer number (31577850).

Almost surely, 2^1430022440 is an apocalyptic number.

1430022440 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 1430022440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2020982400).

1430022440 is an abundant number, since it is smaller than the sum of its proper divisors (2611942360).

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

1430022440 is a wasteful number, since it uses less digits than its factorization.

1430022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555 (or 3551 counting only the distinct ones).

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

The square root of 1430022440 is about 37815.6375061958. The cubic root of 1430022440 is about 1126.6290644096.

Adding to 1430022440 its reverse (442200341), we get a palindrome (1872222781).

The spelling of 1430022440 in words is "one billion, four hundred thirty million, twenty-two thousand, four hundred forty".