254664340 has 96 divisors (see below), whose sum is σ = 633394944. Its totient is φ = 84188160.

The previous prime is 254664331. The next prime is 254664343. The reversal of 254664340 is 43466452.

It is a junction number, because it is equal to n+sod(n) for n = 254664296 and 254664305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254664343) 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 31 ways as a sum of consecutive naturals, for example, 1092864 + ... + 1093096.

It is an arithmetic number, because the mean of its divisors is an integer number (6597864).

Almost surely, 2^254664340 is an apocalyptic number.

254664340 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 254664340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316697472).

254664340 is an abundant number, since it is smaller than the sum of its proper divisors (378730604).

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

254664340 is a wasteful number, since it uses less digits than its factorization.

254664340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 254664340 is about 15958.2060395271. The cubic root of 254664340 is about 633.8542092304.

The spelling of 254664340 in words is "two hundred fifty-four million, six hundred sixty-four thousand, three hundred forty".