273842640 has 160 divisors (see below), whose sum is σ = 953688960. Its totient is φ = 72216576.

The previous prime is 273842629. The next prime is 273842671. The reversal of 273842640 is 46248372.

273842640 is a `hidden beast` number, since 2 + 7 + 3 + 8 + 4 + 2 + 640 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 273842595 and 273842604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208867 + ... + 210173.

It is an arithmetic number, because the mean of its divisors is an integer number (5960556).

Almost surely, 2^273842640 is an apocalyptic number.

273842640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 273842640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476844480).

273842640 is an abundant number, since it is smaller than the sum of its proper divisors (679846320).

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

273842640 is a wasteful number, since it uses less digits than its factorization.

273842640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1414 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 273842640 is about 16548.1914419673. The cubic root of 273842640 is about 649.3821663787.

The spelling of 273842640 in words is "two hundred seventy-three million, eight hundred forty-two thousand, six hundred forty".