273640422 has 16 divisors (see below), whose sum is σ = 597033792. Its totient is φ = 82921320.

The previous prime is 273640417. The next prime is 273640429. The reversal of 273640422 is 224046372.

It is a self number, because there is not a number n which added to its sum of digits gives 273640422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273640429) 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, 2072968 + ... + 2073099.

It is an arithmetic number, because the mean of its divisors is an integer number (37314612).

Almost surely, 2^273640422 is an apocalyptic number.

273640422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

273640422 is an abundant number, since it is smaller than the sum of its proper divisors (323393370).

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

273640422 is a wasteful number, since it uses less digits than its factorization.

273640422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146083.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 273640422 is about 16542.0803407552. The cubic root of 273640422 is about 649.2222824643. Note that the first 4 decimals are identical.

Adding to 273640422 its reverse (224046372), we get a palindrome (497686794).

The spelling of 273640422 in words is "two hundred seventy-three million, six hundred forty thousand, four hundred twenty-two".