275490906 has 16 divisors (see below), whose sum is σ = 552865824. Its totient is φ = 91516304.

The previous prime is 275490889. The next prime is 275490913. The reversal of 275490906 is 609094572.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76596 + ... + 80111.

It is an arithmetic number, because the mean of its divisors is an integer number (34554114).

Almost surely, 2^275490906 is an apocalyptic number.

275490906 is an abundant number, since it is smaller than the sum of its proper divisors (277374918).

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

275490906 is a wasteful number, since it uses less digits than its factorization.

275490906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157005.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 275490906 is about 16597.9187249486. The cubic root of 275490906 is about 650.6824437945.

It can be divided in two parts, 275490 and 906, that added together give a triangular number (276396 = T₇₄₃).

The spelling of 275490906 in words is "two hundred seventy-five million, four hundred ninety thousand, nine hundred six".