1406895220 has 12 divisors (see below), whose sum is σ = 2954480004. Its totient is φ = 562758080.

The previous prime is 1406895209. The next prime is 1406895239. The reversal of 1406895220 is 225986041.

It can be written as a sum of positive squares in 2 ways, for example, as 816016356 + 590878864 = 28566^2 + 24308^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1406895220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35172361 + ... + 35172400.

It is an arithmetic number, because the mean of its divisors is an integer number (246206667).

Almost surely, 2^1406895220 is an apocalyptic number.

1406895220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406895220 is an abundant number, since it is smaller than the sum of its proper divisors (1547584784).

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

1406895220 is a wasteful number, since it uses less digits than its factorization.

1406895220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70344770 (or 70344768 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1406895220 is about 37508.6019467535. The cubic root of 1406895220 is about 1120.5225081122.

The spelling of 1406895220 in words is "one billion, four hundred six million, eight hundred ninety-five thousand, two hundred twenty".