275388894 has 48 divisors (see below), whose sum is σ = 660666240. Its totient is φ = 82201680.

The previous prime is 275388889. The next prime is 275388929. The reversal of 275388894 is 498883572.

It is a happy number.

275388894 is a `hidden beast` number, since 27 + 538 + 8 + 89 + 4 = 666.

275388894 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 275388894.

It is a congruent number.

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, 2887 + ... + 23645.

It is an arithmetic number, because the mean of its divisors is an integer number (13763880).

Almost surely, 2^275388894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275388894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330333120).

275388894 is an abundant number, since it is smaller than the sum of its proper divisors (385277346).

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

275388894 is a wasteful number, since it uses less digits than its factorization.

275388894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20845 (or 20842 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 275388894 is about 16594.8454045225. The cubic root of 275388894 is about 650.6021197733.

The spelling of 275388894 in words is "two hundred seventy-five million, three hundred eighty-eight thousand, eight hundred ninety-four".