400606252 has 12 divisors (see below), whose sum is σ = 720008800. Its totient is φ = 194889456.

The previous prime is 400606247. The next prime is 400606259. The reversal of 400606252 is 252606004.

It is not an unprimeable number, because it can be changed into a prime (400606259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353252 + ... + 1353547.

Almost surely, 2^400606252 is an apocalyptic number.

It is an amenable number.

400606252 is a deficient number, since it is larger than the sum of its proper divisors (319402548).

400606252 is a wasteful number, since it uses less digits than its factorization.

400606252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706840 (or 2706838 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 400606252 is about 20015.1505615121. The cubic root of 400606252 is about 737.1783537366.

The spelling of 400606252 in words is "four hundred million, six hundred six thousand, two hundred fifty-two".