1431728600 has 48 divisors (see below), whose sum is σ = 3336114600. Its totient is φ = 571427840.

The previous prime is 1431728581. The next prime is 1431728609. The reversal of 1431728600 is 68271341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431728609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85736 + ... + 101064.

Almost surely, 2^1431728600 is an apocalyptic number.

1431728600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431728600 is an abundant number, since it is smaller than the sum of its proper divisors (1904386000).

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

1431728600 is a wasteful number, since it uses less digits than its factorization.

1431728600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15812 (or 15803 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1431728600 is about 37838.1897029972. The cubic root of 1431728600 is about 1127.0769467724.

Adding to 1431728600 its reverse (68271341), we get a palindrome (1499999941).

The spelling of 1431728600 in words is "one billion, four hundred thirty-one million, seven hundred twenty-eight thousand, six hundred".