273078378 has 80 divisors (see below), whose sum is σ = 652223880. Its totient is φ = 85100544.

The previous prime is 273078367. The next prime is 273078437. The reversal of 273078378 is 873870372.

273078378 is a `hidden beast` number, since 273 + 0 + 7 + 8 + 378 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 261565929 + 11512449 = 16173^2 + 3393^2 .

It is a super-2 number, since 2×273078378² = 149143601062221768, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 630450 + ... + 630882.

Almost surely, 2^273078378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 273078378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326111940).

273078378 is an abundant number, since it is smaller than the sum of its proper divisors (379145502).

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

273078378 is a wasteful number, since it uses less digits than its factorization.

273078378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 273078378 is about 16525.0832978233. The cubic root of 273078378 is about 648.7774875586. Note that the first 3 decimals are identical.

The spelling of 273078378 in words is "two hundred seventy-three million, seventy-eight thousand, three hundred seventy-eight".