403761856 has 56 divisors (see below), whose sum is σ = 870671360. Its totient is φ = 185068800.

The previous prime is 403761823. The next prime is 403761857. The reversal of 403761856 is 658167304.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403761857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32341 + ... + 43051.

Almost surely, 2^403761856 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 403761856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435335680).

403761856 is an abundant number, since it is smaller than the sum of its proper divisors (466909504).

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

403761856 is a wasteful number, since it uses less digits than its factorization.

403761856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10773 (or 10763 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 403761856 is about 20093.8263155627. The cubic root of 403761856 is about 739.1088957141.

The spelling of 403761856 in words is "four hundred three million, seven hundred sixty-one thousand, eight hundred fifty-six".