1406828785 has 16 divisors (see below), whose sum is σ = 1715368320. Its totient is φ = 1107469440.

The previous prime is 1406828783. The next prime is 1406828789. The reversal of 1406828785 is 5878286041.

It is not a de Polignac number, because 1406828785 - 2¹ = 1406828783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1406828783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86404 + ... + 101386.

It is an arithmetic number, because the mean of its divisors is an integer number (107210520).

Almost surely, 2^1406828785 is an apocalyptic number.

It is an amenable number.

1406828785 is a deficient number, since it is larger than the sum of its proper divisors (308539535).

1406828785 is a wasteful number, since it uses less digits than its factorization.

1406828785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15288.

The product of its (nonzero) digits is 860160, while the sum is 49.

The square root of 1406828785 is about 37507.7163394414. The cubic root of 1406828785 is about 1120.5048704366.

The spelling of 1406828785 in words is "one billion, four hundred six million, eight hundred twenty-eight thousand, seven hundred eighty-five".