275145408 has 84 divisors (see below), whose sum is σ = 835075800. Its totient is φ = 86317056.

The previous prime is 275145397. The next prime is 275145421. The reversal of 275145408 is 804541572.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4258 + ... + 23841.

Almost surely, 2^275145408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275145408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417537900).

275145408 is an abundant number, since it is smaller than the sum of its proper divisors (559930392).

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

275145408 is a wasteful number, since it uses less digits than its factorization.

275145408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28134 (or 28121 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 275145408 is about 16587.5075885439. The cubic root of 275145408 is about 650.4103192310.

The spelling of 275145408 in words is "two hundred seventy-five million, one hundred forty-five thousand, four hundred eight".