400206027 has 48 divisors (see below), whose sum is σ = 622961280. Its totient is φ = 227575296.

The previous prime is 400206019. The next prime is 400206067. The reversal of 400206027 is 720602004.

It is a happy number.

It is not a de Polignac number, because 400206027 - 2³ = 400206019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400205994 and 400206012.

It is not an unprimeable number, because it can be changed into a prime (400206007) 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 47 ways as a sum of consecutive naturals, for example, 508128 + ... + 508914.

It is an arithmetic number, because the mean of its divisors is an integer number (12978360).

Almost surely, 2^400206027 is an apocalyptic number.

400206027 is a deficient number, since it is larger than the sum of its proper divisors (222755253).

400206027 is a wasteful number, since it uses less digits than its factorization.

400206027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 400206027 is about 20005.1500119344. The cubic root of 400206027 is about 736.9327796749.

The spelling of 400206027 in words is "four hundred million, two hundred six thousand, twenty-seven".