1247487430 has 64 divisors (see below), whose sum is σ = 2665156608. Its totient is φ = 411396480.

The previous prime is 1247487401. The next prime is 1247487431. The reversal of 1247487430 is 347847421.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247487431) 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, 373749 + ... + 377071.

It is an arithmetic number, because the mean of its divisors is an integer number (41643072).

Almost surely, 2^1247487430 is an apocalyptic number.

1247487430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1247487430 is an abundant number, since it is smaller than the sum of its proper divisors (1417669178).

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

1247487430 is a wasteful number, since it uses less digits than its factorization.

1247487430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541.

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 1247487430 is about 35319.7880797719. The cubic root of 1247487430 is about 1076.4951051562.

The spelling of 1247487430 in words is "one billion, two hundred forty-seven million, four hundred eighty-seven thousand, four hundred thirty".