275400828 has 18 divisors (see below), whose sum is σ = 696152184. Its totient is φ = 91800264.

The previous prime is 275400823. The next prime is 275400847. The reversal of 275400828 is 828004572.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7650023 = 275400828 / (2 + 7 + 5 + 4 + 0 + 0 + 8 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 275400792 and 275400801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275400823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3824976 + ... + 3825047.

Almost surely, 2^275400828 is an apocalyptic number.

It is an amenable number.

275400828 is an abundant number, since it is smaller than the sum of its proper divisors (420751356).

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

275400828 is a wasteful number, since it uses less digits than its factorization.

275400828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650033 (or 7650028 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 275400828 is about 16595.2049701111. The cubic root of 275400828 is about 650.6115176027.

The spelling of 275400828 in words is "two hundred seventy-five million, four hundred thousand, eight hundred twenty-eight".