383388782628 has 12 divisors (see below), whose sum is σ = 894573826160. Its totient is φ = 127796260872.

The previous prime is 383388782591. The next prime is 383388782657. The reversal of 383388782628 is 826287883383.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15974532598 + ... + 15974532621.

Almost surely, 2^383388782628 is an apocalyptic number.

It is an amenable number.

383388782628 is an abundant number, since it is smaller than the sum of its proper divisors (511185043532).

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

383388782628 is a wasteful number, since it uses less digits than its factorization.

383388782628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31949065226 (or 31949065224 counting only the distinct ones).

The product of its digits is 148635648, while the sum is 66.

The spelling of 383388782628 in words is "three hundred eighty-three billion, three hundred eighty-eight million, seven hundred eighty-two thousand, six hundred twenty-eight".