273401856 has 288 divisors, whose sum is σ = 977820480. Its totient is φ = 71663616.

The previous prime is 273401839. The next prime is 273401893. The reversal of 273401856 is 658104372.

It is a tau number, because it is divible by the number of its divisors (288).

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 273401856.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1677231 + ... + 1677393.

It is an arithmetic number, because the mean of its divisors is an integer number (3395210).

Almost surely, 2^273401856 is an apocalyptic number.

273401856 is a gapful number since it is divisible by the number (26) 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 273401856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488910240).

273401856 is an abundant number, since it is smaller than the sum of its proper divisors (704418624).

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

273401856 is a wasteful number, since it uses less digits than its factorization.

273401856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 273401856 is about 16534.8678857740. The cubic root of 273401856 is about 649.0335586472.

The spelling of 273401856 in words is "two hundred seventy-three million, four hundred one thousand, eight hundred fifty-six".