400524354252 has 72 divisors (see below), whose sum is σ = 1106108417232. Its totient is φ = 121191657600.

The previous prime is 400524354233. The next prime is 400524354283. The reversal of 400524354252 is 252453425004.

400524354252 is a `hidden beast` number, since 4 + 0 + 0 + 52 + 4 + 354 + 252 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 478899 + ... + 1015082.

It is an arithmetic number, because the mean of its divisors is an integer number (15362616906).

Almost surely, 2^400524354252 is an apocalyptic number.

It is an amenable number.

400524354252 is an abundant number, since it is smaller than the sum of its proper divisors (705584062980).

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

400524354252 is a wasteful number, since it uses less digits than its factorization.

400524354252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494679 (or 1494674 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 400524354252 its reverse (252453425004), we get a palindrome (652977779256).

The spelling of 400524354252 in words is "four hundred billion, five hundred twenty-four million, three hundred fifty-four thousand, two hundred fifty-two".