400304719872 has 192 divisors, whose sum is σ = 1189253520000. Its totient is φ = 133046157312.

The previous prime is 400304719819. The next prime is 400304719907. The reversal of 400304719872 is 278917403004.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19287933 + ... + 19308675.

It is an arithmetic number, because the mean of its divisors is an integer number (6194028750).

Almost surely, 2^400304719872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400304719872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594626760000).

400304719872 is an abundant number, since it is smaller than the sum of its proper divisors (788948800128).

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

400304719872 is a wasteful number, since it uses less digits than its factorization.

400304719872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21123 (or 21097 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 400304719872 in words is "four hundred billion, three hundred four million, seven hundred nineteen thousand, eight hundred seventy-two".