390181068 has 72 divisors (see below), whose sum is σ = 1005522336. Its totient is φ = 127545600.

The previous prime is 390181067. The next prime is 390181111. The reversal of 390181068 is 860181093.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (390181067) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 748648 + ... + 749168.

It is an arithmetic number, because the mean of its divisors is an integer number (13965588).

Almost surely, 2^390181068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390181068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502761168).

390181068 is an abundant number, since it is smaller than the sum of its proper divisors (615341268).

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

390181068 is a wasteful number, since it uses less digits than its factorization.

390181068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 390181068 is about 19753.0014934440. The cubic root of 390181068 is about 730.7274090409.

The spelling of 390181068 in words is "three hundred ninety million, one hundred eighty-one thousand, sixty-eight".