378128992 has 12 divisors (see below), whose sum is σ = 744441516. Its totient is φ = 189064480.

The previous prime is 378128969. The next prime is 378129029. The reversal of 378128992 is 299821873.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5908234 + ... + 5908297.

It is an arithmetic number, because the mean of its divisors is an integer number (62036793).

Almost surely, 2^378128992 is an apocalyptic number.

378128992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

378128992 is a deficient number, since it is larger than the sum of its proper divisors (366312524).

378128992 is a wasteful number, since it uses less digits than its factorization.

378128992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11816541 (or 11816533 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 378128992 is about 19445.5391285508. The cubic root of 378128992 is about 723.1249156849.

The spelling of 378128992 in words is "three hundred seventy-eight million, one hundred twenty-eight thousand, nine hundred ninety-two".