275795640 has 192 divisors, whose sum is σ = 960429600. Its totient is φ = 68428800.

The previous prime is 275795633. The next prime is 275795683. The reversal of 275795640 is 46597572.

275795640 is a `hidden beast` number, since 27 + 579 + 56 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 416910 + ... + 417570.

Almost surely, 2^275795640 is an apocalyptic number.

275795640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275795640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480214800).

275795640 is an abundant number, since it is smaller than the sum of its proper divisors (684633960).

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

275795640 is a wasteful number, since it uses less digits than its factorization.

275795640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The square root of 275795640 is about 16607.0960736668. The cubic root of 275795640 is about 650.9222726400.

The spelling of 275795640 in words is "two hundred seventy-five million, seven hundred ninety-five thousand, six hundred forty".