275782290 has 64 divisors (see below), whose sum is σ = 771897600. Its totient is φ = 63033600.

The previous prime is 275782223. The next prime is 275782291. The reversal of 275782290 is 92287572.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (275782291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3111 + ... + 23690.

It is an arithmetic number, because the mean of its divisors is an integer number (12060900).

Almost surely, 2^275782290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275782290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385948800).

275782290 is an abundant number, since it is smaller than the sum of its proper divisors (496115310).

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

275782290 is a wasteful number, since it uses less digits than its factorization.

275782290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26832 (or 26818 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 275782290 is about 16606.6941321866. The cubic root of 275782290 is about 650.9117697515.

The spelling of 275782290 in words is "two hundred seventy-five million, seven hundred eighty-two thousand, two hundred ninety".