378273312 has 36 divisors (see below), whose sum is σ = 1075715550. Its totient is φ = 126091008.

The previous prime is 378273283. The next prime is 378273317. The reversal of 378273312 is 213372873.

378273312 is a `hidden beast` number, since 3 + 78 + 273 + 312 = 666.

It can be written as a sum of positive squares in only one way, i.e., 267518736 + 110754576 = 16356^2 + 10524^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 (378273317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 656437 + ... + 657012.

Almost surely, 2^378273312 is an apocalyptic number.

378273312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

378273312 is an abundant number, since it is smaller than the sum of its proper divisors (697442238).

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

378273312 is a wasteful number, since it uses less digits than its factorization.

378273312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313465 (or 1313454 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 378273312 is about 19449.2496513362. The cubic root of 378273312 is about 723.2169020314.

The spelling of 378273312 in words is "three hundred seventy-eight million, two hundred seventy-three thousand, three hundred twelve".