3728403784 has 16 divisors (see below), whose sum is σ = 7989436800. Its totient is φ = 1597887312.

The previous prime is 3728403779. The next prime is 3728403823. The reversal of 3728403784 is 4873048273.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33289264 + ... + 33289375.

It is an arithmetic number, because the mean of its divisors is an integer number (499339800).

Almost surely, 2^3728403784 is an apocalyptic number.

It is an amenable number.

3728403784 is an abundant number, since it is smaller than the sum of its proper divisors (4261033016).

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

3728403784 is a wasteful number, since it uses less digits than its factorization.

3728403784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66578652 (or 66578648 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 46.

The square root of 3728403784 is about 61060.6565965352. The cubic root of 3728403784 is about 1550.6280887060.

The spelling of 3728403784 in words is "three billion, seven hundred twenty-eight million, four hundred three thousand, seven hundred eighty-four".