378617772 has 96 divisors (see below), whose sum is σ = 973615104. Its totient is φ = 113817600.

The previous prime is 378617749. The next prime is 378617779. The reversal of 378617772 is 277716873.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (378617779) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1982197 + ... + 1982387.

It is an arithmetic number, because the mean of its divisors is an integer number (10141824).

Almost surely, 2^378617772 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 378617772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486807552).

378617772 is an abundant number, since it is smaller than the sum of its proper divisors (594997332).

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

378617772 is a wasteful number, since it uses less digits than its factorization.

378617772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 437 counting only the distinct ones).

The product of its digits is 691488, while the sum is 48.

The square root of 378617772 is about 19458.1029907851. The cubic root of 378617772 is about 723.4363586231.

The spelling of 378617772 in words is "three hundred seventy-eight million, six hundred seventeen thousand, seven hundred seventy-two".