400030721352 has 48 divisors (see below), whose sum is σ = 1098675938880. Its totient is φ = 131465493600.

The previous prime is 400030721341. The next prime is 400030721369. The reversal of 400030721352 is 253127030004.

400030721352 is a `hidden beast` number, since 4 + 0 + 0 + 0 + 307 + 2 + 1 + 352 = 666.

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 11 ways as a sum of consecutive naturals, for example, 39121524 + ... + 39131747.

It is an arithmetic number, because the mean of its divisors is an integer number (22889082060).

Almost surely, 2^400030721352 is an apocalyptic number.

It is an amenable number.

400030721352 is an abundant number, since it is smaller than the sum of its proper divisors (698645217528).

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

400030721352 is a wasteful number, since it uses less digits than its factorization.

400030721352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78253354 (or 78253347 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

Adding to 400030721352 its reverse (253127030004), we get a palindrome (653157751356).

The spelling of 400030721352 in words is "four hundred billion, thirty million, seven hundred twenty-one thousand, three hundred fifty-two".