275394816 has 216 divisors, whose sum is σ = 870498720. Its totient is φ = 86593536.

The previous prime is 275394803. The next prime is 275394839. The reversal of 275394816 is 618493572.

It is a tau number, because it is divible by the number of its divisors (216).

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, 1181836 + ... + 1182068.

Almost surely, 2^275394816 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 275394816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435249360).

275394816 is an abundant number, since it is smaller than the sum of its proper divisors (595103904).

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

275394816 is an equidigital number, since it uses as much as digits as its factorization.

275394816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 257 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 275394816 is about 16595.0238324625. The cubic root of 275394816 is about 650.6067832852.

The spelling of 275394816 in words is "two hundred seventy-five million, three hundred ninety-four thousand, eight hundred sixteen".