275055690 has 128 divisors (see below), whose sum is σ = 828237312. Its totient is φ = 56908800.

The previous prime is 275055667. The next prime is 275055707. The reversal of 275055690 is 96550572.

It is a super-2 number, since 2×275055690² = 151311265202752200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 143740 + ... + 145640.

It is an arithmetic number, because the mean of its divisors is an integer number (6470604).

Almost surely, 2^275055690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275055690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414118656).

275055690 is an abundant number, since it is smaller than the sum of its proper divisors (553181622).

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

275055690 is a wasteful number, since it uses less digits than its factorization.

275055690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 275055690 is about 16584.8029834545. The cubic root of 275055690 is about 650.3396173948.

The spelling of 275055690 in words is "two hundred seventy-five million, fifty-five thousand, six hundred ninety".