275643740 has 12 divisors (see below), whose sum is σ = 578851896. Its totient is φ = 110257488.

The previous prime is 275643737. The next prime is 275643743. The reversal of 275643740 is 47346572.

It is an interprime number because it is at equal distance from previous prime (275643737) and next prime (275643743).

It is a junction number, because it is equal to n+sod(n) for n = 275643694 and 275643703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275643743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6891074 + ... + 6891113.

It is an arithmetic number, because the mean of its divisors is an integer number (48237658).

Almost surely, 2^275643740 is an apocalyptic number.

275643740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275643740 is an abundant number, since it is smaller than the sum of its proper divisors (303208156).

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

275643740 is a wasteful number, since it uses less digits than its factorization.

275643740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782196 (or 13782194 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 38.

The square root of 275643740 is about 16602.5220975610. The cubic root of 275643740 is about 650.8027478459.

The spelling of 275643740 in words is "two hundred seventy-five million, six hundred forty-three thousand, seven hundred forty".