1430250640 has 160 divisors (see below), whose sum is σ = 4115736576. Its totient is φ = 450109440.

The previous prime is 1430250599. The next prime is 1430250641. The reversal of 1430250640 is 460520341.

It is not an unprimeable number, because it can be changed into a prime (1430250641) 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, 1623000 + ... + 1623880.

Almost surely, 2^1430250640 is an apocalyptic number.

1430250640 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 1430250640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057868288).

1430250640 is an abundant number, since it is smaller than the sum of its proper divisors (2685485936).

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

1430250640 is a wasteful number, since it uses less digits than its factorization.

1430250640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1430250640 is about 37818.6546561350. The cubic root of 1430250640 is about 1126.6889895946.

Adding to 1430250640 its reverse (460520341), we get a palindrome (1890770981).

The spelling of 1430250640 in words is "one billion, four hundred thirty million, two hundred fifty thousand, six hundred forty".