1406427660 has 144 divisors (see below), whose sum is σ = 4762517760. Its totient is φ = 333002880.

The previous prime is 1406427643. The next prime is 1406427661. The reversal of 1406427660 is 667246041.

1406427660 is a `hidden beast` number, since 1 + 4 + 0 + 642 + 7 + 6 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1406427661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76881 + ... + 93399.

It is an arithmetic number, because the mean of its divisors is an integer number (33073040).

Almost surely, 2^1406427660 is an apocalyptic number.

1406427660 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 1406427660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2381258880).

1406427660 is an abundant number, since it is smaller than the sum of its proper divisors (3356090100).

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

1406427660 is a wasteful number, since it uses less digits than its factorization.

1406427660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16588 (or 16583 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1406427660 is about 37502.3687251885. The cubic root of 1406427660 is about 1120.3983648817.

The spelling of 1406427660 in words is "one billion, four hundred six million, four hundred twenty-seven thousand, six hundred sixty".