275021020 has 12 divisors (see below), whose sum is σ = 577544184. Its totient is φ = 110008400.

The previous prime is 275021011. The next prime is 275021059. The reversal of 275021020 is 20120572.

It is a super-2 number, since 2×275021020² = 151273122883680800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6875506 + ... + 6875545.

It is an arithmetic number, because the mean of its divisors is an integer number (48128682).

Almost surely, 2^275021020 is an apocalyptic number.

275021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275021020 is an abundant number, since it is smaller than the sum of its proper divisors (302523164).

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

275021020 is a wasteful number, since it uses less digits than its factorization.

275021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13751060 (or 13751058 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 275021020 is about 16583.7577165129. The cubic root of 275021020 is about 650.3122917504.

Adding to 275021020 its reverse (20120572), we get a palindrome (295141592).

The spelling of 275021020 in words is "two hundred seventy-five million, twenty-one thousand, twenty".