273305376 has 144 divisors (see below), whose sum is σ = 809198208. Its totient is φ = 87436800.

The previous prime is 273305371. The next prime is 273305387. The reversal of 273305376 is 673503372.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a self number, because there is not a number n which added to its sum of digits gives 273305376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273305371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 825531 + ... + 825861.

It is an arithmetic number, because the mean of its divisors is an integer number (5619432).

Almost surely, 2^273305376 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 273305376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404599104).

273305376 is an abundant number, since it is smaller than the sum of its proper divisors (535892832).

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

273305376 is a wasteful number, since it uses less digits than its factorization.

273305376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 36.

The square root of 273305376 is about 16531.9501571956. The cubic root of 273305376 is about 648.9572044655.

The spelling of 273305376 in words is "two hundred seventy-three million, three hundred five thousand, three hundred seventy-six".