3678390 has 48 divisors (see below), whose sum is σ = 9985248. Its totient is φ = 937728.

The previous prime is 3678377. The next prime is 3678391. The reversal of 3678390 is 938763.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3678391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1182 + ... + 2958.

It is an arithmetic number, because the mean of its divisors is an integer number (208026).

Almost surely, 2^3678390 is an apocalyptic number.

3678390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3678390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4992624).

3678390 is an abundant number, since it is smaller than the sum of its proper divisors (6306858).

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

3678390 is a wasteful number, since it uses less digits than its factorization.

3678390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3678390 is about 1917.9129281591. The cubic root of 3678390 is about 154.3663342620.

The spelling of 3678390 in words is "three million, six hundred seventy-eight thousand, three hundred ninety".