1427640860 has 24 divisors (see below), whose sum is σ = 3054614976. Its totient is φ = 560281280.

The previous prime is 1427640827. The next prime is 1427640881. The reversal of 1427640860 is 680467241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672356 + ... + 674475.

It is an arithmetic number, because the mean of its divisors is an integer number (127275624).

Almost surely, 2^1427640860 is an apocalyptic number.

1427640860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1427640860 is an abundant number, since it is smaller than the sum of its proper divisors (1626974116).

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

1427640860 is a wasteful number, since it uses less digits than its factorization.

1427640860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346893 (or 1346891 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1427640860 is about 37784.1350304595. The cubic root of 1427640860 is about 1126.0032821200.

The spelling of 1427640860 in words is "one billion, four hundred twenty-seven million, six hundred forty thousand, eight hundred sixty".