1406886820 has 12 divisors (see below), whose sum is σ = 2954462364. Its totient is φ = 562754720.

The previous prime is 1406886809. The next prime is 1406886827. The reversal of 1406886820 is 286886041.

It can be written as a sum of positive squares in 2 ways, for example, as 1019269476 + 387617344 = 31926^2 + 19688^2 .

It is not an unprimeable number, because it can be changed into a prime (1406886827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35172151 + ... + 35172190.

It is an arithmetic number, because the mean of its divisors is an integer number (246205197).

Almost surely, 2^1406886820 is an apocalyptic number.

1406886820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406886820 is an abundant number, since it is smaller than the sum of its proper divisors (1547575544).

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

1406886820 is a wasteful number, since it uses less digits than its factorization.

1406886820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70344350 (or 70344348 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 1406886820 is about 37508.4899722716. The cubic root of 1406886820 is about 1120.5202780462.

The spelling of 1406886820 in words is "one billion, four hundred six million, eight hundred eighty-six thousand, eight hundred twenty".