255733380 has 144 divisors (see below), whose sum is σ = 938770560. Its totient is φ = 55010304.

The previous prime is 255733367. The next prime is 255733393. The reversal of 255733380 is 83337552.

255733380 is a `hidden beast` number, since 2 + 5 + 573 + 3 + 3 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (255733367) and next prime (255733393).

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 47 ways as a sum of consecutive naturals, for example, 15451 + ... + 27389.

It is an arithmetic number, because the mean of its divisors is an integer number (6519240).

Almost surely, 2^255733380 is an apocalyptic number.

255733380 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 255733380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469385280).

255733380 is an abundant number, since it is smaller than the sum of its proper divisors (683037180).

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

255733380 is a wasteful number, since it uses less digits than its factorization.

255733380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11978 (or 11973 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 255733380 is about 15991.6659544902. The cubic root of 255733380 is about 634.7399104312.

It can be divided in two parts, 2557 and 33380, that added together give a cube (35937 = 33³).

The spelling of 255733380 in words is "two hundred fifty-five million, seven hundred thirty-three thousand, three hundred eighty".