382778532 has 36 divisors (see below), whose sum is σ = 968467500. Its totient is φ = 127475712.

The previous prime is 382778531. The next prime is 382778563. The reversal of 382778532 is 235877283.

It can be written as a sum of positive squares in 2 ways, for example, as 290157156 + 92621376 = 17034^2 + 9624^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (382778531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40708 + ... + 49220.

It is an arithmetic number, because the mean of its divisors is an integer number (26901875).

Almost surely, 2^382778532 is an apocalyptic number.

It is an amenable number.

382778532 is an abundant number, since it is smaller than the sum of its proper divisors (585688968).

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

382778532 is a wasteful number, since it uses less digits than its factorization.

382778532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9772 (or 9767 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 382778532 is about 19564.7267294997. The cubic root of 382778532 is about 726.0767398334.

The spelling of 382778532 in words is "three hundred eighty-two million, seven hundred seventy-eight thousand, five hundred thirty-two".