400786848 has 432 divisors, whose sum is σ = 1505806848. Its totient is φ = 98841600.

The previous prime is 400786801. The next prime is 400786853. The reversal of 400786848 is 848687004.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7561990 + ... + 7562042.

It is an arithmetic number, because the mean of its divisors is an integer number (3485664).

Almost surely, 2^400786848 is an apocalyptic number.

400786848 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400786848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (752903424).

400786848 is an abundant number, since it is smaller than the sum of its proper divisors (1105020000).

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

400786848 is a wasteful number, since it uses less digits than its factorization.

400786848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 400786848 is about 20019.6615356004. The cubic root of 400786848 is about 737.2891120858.

The spelling of 400786848 in words is "four hundred million, seven hundred eighty-six thousand, eight hundred forty-eight".