400552326 has 24 divisors (see below), whose sum is σ = 871330824. Its totient is φ = 132984000.

The previous prime is 400552303. The next prime is 400552381. The reversal of 400552326 is 623255004.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 400552326.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 39811 + ... + 48846.

It is an arithmetic number, because the mean of its divisors is an integer number (36305451).

Almost surely, 2^400552326 is an apocalyptic number.

400552326 is an abundant number, since it is smaller than the sum of its proper divisors (470778498).

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

400552326 is a wasteful number, since it uses less digits than its factorization.

400552326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88916 (or 88913 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 400552326 is about 20013.8033866629. The cubic root of 400552326 is about 737.1452748189.

The spelling of 400552326 in words is "four hundred million, five hundred fifty-two thousand, three hundred twenty-six".