378990 has 24 divisors (see below), whose sum is σ = 985608. Its totient is φ = 101040.

The previous prime is 378977. The next prime is 378997. The reversal of 378990 is 99873.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 378990.

It is not an unprimeable number, because it can be changed into a prime (378997) by changing a digit.

378990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2016 + ... + 2195.

It is an arithmetic number, because the mean of its divisors is an integer number (41067).

2³⁷⁸⁹⁹⁰ is an apocalyptic number.

378990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

378990 is an abundant number, since it is smaller than the sum of its proper divisors (606618).

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

378990 is a wasteful number, since it uses less digits than its factorization.

378990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224 (or 4221 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 378990 is about 615.6216370467. The cubic root of 378990 is about 72.3673356717.

The spelling of 378990 in words is "three hundred seventy-eight thousand, nine hundred ninety".