275985400 has 48 divisors (see below), whose sum is σ = 642916440. Its totient is φ = 110179200.

The previous prime is 275985397. The next prime is 275985407. The reversal of 275985400 is 4589572.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275985407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137202 + ... + 139198.

Almost surely, 2^275985400 is an apocalyptic number.

275985400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275985400 is an abundant number, since it is smaller than the sum of its proper divisors (366931040).

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

275985400 is a wasteful number, since it uses less digits than its factorization.

275985400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704 (or 2695 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 275985400 is about 16612.8083116612. The cubic root of 275985400 is about 651.0715265010.

The spelling of 275985400 in words is "two hundred seventy-five million, nine hundred eighty-five thousand, four hundred".