273049728 has 64 divisors (see below), whose sum is σ = 828909120. Its totient is φ = 78013440.

The previous prime is 273049669. The next prime is 273049729. The reversal of 273049728 is 827940372.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 273049728.

It is not an unprimeable number, because it can be changed into a prime (273049729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48103 + ... + 53478.

It is an arithmetic number, because the mean of its divisors is an integer number (12951705).

Almost surely, 2^273049728 is an apocalyptic number.

273049728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

273049728 is an abundant number, since it is smaller than the sum of its proper divisors (555859392).

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

273049728 is a wasteful number, since it uses less digits than its factorization.

273049728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101605 (or 101593 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 273049728 is about 16524.2164110738. The cubic root of 273049728 is about 648.7547979494.

The spelling of 273049728 in words is "two hundred seventy-three million, forty-nine thousand, seven hundred twenty-eight".