400532316 has 12 divisors (see below), whose sum is σ = 934575432. Its totient is φ = 133510768.

The previous prime is 400532273. The next prime is 400532317. The reversal of 400532316 is 613235004.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×400532316² = 320852272320647712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400532317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16688835 + ... + 16688858.

It is an arithmetic number, because the mean of its divisors is an integer number (77881286).

Almost surely, 2^400532316 is an apocalyptic number.

It is an amenable number.

400532316 is an abundant number, since it is smaller than the sum of its proper divisors (534043116).

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

400532316 is a wasteful number, since it uses less digits than its factorization.

400532316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33377700 (or 33377698 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 400532316 is about 20013.3034754385. The cubic root of 400532316 is about 737.1329996664.

The spelling of 400532316 in words is "four hundred million, five hundred thirty-two thousand, three hundred sixteen".