378681286 has 16 divisors (see below), whose sum is σ = 605491200. Its totient is φ = 177103368.

The previous prime is 378681271. The next prime is 378681287. The reversal of 378681286 is 682186873.

It is a super-2 number, since 2×378681286² = 286799032733227592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378681287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60070 + ... + 66073.

It is an arithmetic number, because the mean of its divisors is an integer number (37843200).

Almost surely, 2^378681286 is an apocalyptic number.

378681286 is a deficient number, since it is larger than the sum of its proper divisors (226809914).

378681286 is a wasteful number, since it uses less digits than its factorization.

378681286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126243.

The product of its digits is 774144, while the sum is 49.

The square root of 378681286 is about 19459.7349930568. The cubic root of 378681286 is about 723.4768090644.

The spelling of 378681286 in words is "three hundred seventy-eight million, six hundred eighty-one thousand, two hundred eighty-six".