382878890 has 32 divisors (see below), whose sum is σ = 710162640. Its totient is φ = 148555264.

The previous prime is 382878889. The next prime is 382878919. The reversal of 382878890 is 98878283.

It can be written as a sum of positive squares in 8 ways, for example, as 234794329 + 148084561 = 15323^2 + 12169^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

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 15 ways as a sum of consecutive naturals, for example, 43112 + ... + 51228.

Almost surely, 2^382878890 is an apocalyptic number.

382878890 is a deficient number, since it is larger than the sum of its proper divisors (327283750).

382878890 is a wasteful number, since it uses less digits than its factorization.

382878890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8266.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 382878890 is about 19567.2913301765. The cubic root of 382878890 is about 726.1401892662.

The spelling of 382878890 in words is "three hundred eighty-two million, eight hundred seventy-eight thousand, eight hundred ninety".