387771552 has 72 divisors (see below), whose sum is σ = 1260264096. Its totient is φ = 110791296.

The previous prime is 387771521. The next prime is 387771569. The reversal of 387771552 is 255177783.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 387771498 and 387771507.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94158 + ... + 98189.

It is an arithmetic number, because the mean of its divisors is an integer number (17503668).

Almost surely, 2^387771552 is an apocalyptic number.

387771552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

387771552 is an abundant number, since it is smaller than the sum of its proper divisors (872492544).

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

387771552 is a wasteful number, since it uses less digits than its factorization.

387771552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192370 (or 192359 counting only the distinct ones).

The product of its digits is 411600, while the sum is 45.

The square root of 387771552 is about 19691.9159047564. The cubic root of 387771552 is about 729.2201291797.

The spelling of 387771552 in words is "three hundred eighty-seven million, seven hundred seventy-one thousand, five hundred fifty-two".