406869428 has 24 divisors (see below), whose sum is σ = 827534400. Its totient is φ = 171416448.

The previous prime is 406869413. The next prime is 406869433. The reversal of 406869428 is 824968604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121493 + ... + 124796.

It is an arithmetic number, because the mean of its divisors is an integer number (34480600).

Almost surely, 2^406869428 is an apocalyptic number.

It is an amenable number.

406869428 is an abundant number, since it is smaller than the sum of its proper divisors (420664972).

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

406869428 is a wasteful number, since it uses less digits than its factorization.

406869428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246359 (or 246357 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 406869428 is about 20171.0046353671. The cubic root of 406869428 is about 741.0002470794. Note that the first 3 decimals are identical.

The spelling of 406869428 in words is "four hundred six million, eight hundred sixty-nine thousand, four hundred twenty-eight".