275656920 has 128 divisors (see below), whose sum is σ = 1031063040. Its totient is φ = 57277440.

The previous prime is 275656891. The next prime is 275656937. The reversal of 275656920 is 29656572.

275656920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5677 + ... + 24156.

It is an arithmetic number, because the mean of its divisors is an integer number (8055180).

Almost surely, 2^275656920 is an apocalyptic number.

275656920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275656920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515531520).

275656920 is an abundant number, since it is smaller than the sum of its proper divisors (755406120).

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

275656920 is a wasteful number, since it uses less digits than its factorization.

275656920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29865 (or 29861 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 275656920 is about 16602.9190204614. The cubic root of 275656920 is about 650.8131204662.

The spelling of 275656920 in words is "two hundred seventy-five million, six hundred fifty-six thousand, nine hundred twenty".