378134280 has 144 divisors (see below), whose sum is σ = 1271020140. Its totient is φ = 97493760.

The previous prime is 378134243. The next prime is 378134287. The reversal of 378134280 is 82431873.

378134280 is a `hidden beast` number, since 378 + 1 + 3 + 4 + 280 = 666.

378134280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 352913796 + 25220484 = 18786^2 + 5022^2 .

It is a super-2 number, since 2×378134280² = 285971067422236800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (378134287) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 345414 + ... + 346506.

Almost surely, 2^378134280 is an apocalyptic number.

378134280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378134280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635510070).

378134280 is an abundant number, since it is smaller than the sum of its proper divisors (892885860).

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

378134280 is a wasteful number, since it uses less digits than its factorization.

378134280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 378134280 is about 19445.6750975635. The cubic root of 378134280 is about 723.1282865511.

The spelling of 378134280 in words is "three hundred seventy-eight million, one hundred thirty-four thousand, two hundred eighty".