1430730440 has 16 divisors (see below), whose sum is σ = 3219143580. Its totient is φ = 572292160.

The previous prime is 1430730439. The next prime is 1430730449. The reversal of 1430730440 is 440370341.

It can be written as a sum of positive squares in 2 ways, for example, as 1421742436 + 8988004 = 37706^2 + 2998^2 .

It is not an unprimeable number, because it can be changed into a prime (1430730449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17884091 + ... + 17884170.

Almost surely, 2^1430730440 is an apocalyptic number.

1430730440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1430730440 is an abundant number, since it is smaller than the sum of its proper divisors (1788413140).

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

1430730440 is a wasteful number, since it uses less digits than its factorization.

1430730440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35768272 (or 35768268 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 1430730440 is about 37824.9975545273. The cubic root of 1430730440 is about 1126.8149640041.

The spelling of 1430730440 in words is "one billion, four hundred thirty million, seven hundred thirty thousand, four hundred forty".