254240740 has 24 divisors (see below), whose sum is σ = 574975800. Its totient is φ = 93873408.

The previous prime is 254240737. The next prime is 254240743. The reversal of 254240740 is 47042452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (254240737) and next prime (254240743).

It can be written as a sum of positive squares in 4 ways, for example, as 10381284 + 243859456 = 3222^2 + 15616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 254240699 and 254240708.

It is not an unprimeable number, because it can be changed into a prime (254240743) 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 7 ways as a sum of consecutive naturals, for example, 488665 + ... + 489184.

It is an arithmetic number, because the mean of its divisors is an integer number (23957325).

Almost surely, 2^254240740 is an apocalyptic number.

254240740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254240740 is an abundant number, since it is smaller than the sum of its proper divisors (320735060).

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

254240740 is a wasteful number, since it uses less digits than its factorization.

254240740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977871 (or 977869 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 254240740 is about 15944.9283472833. The cubic root of 254240740 is about 633.5025703471.

The spelling of 254240740 in words is "two hundred fifty-four million, two hundred forty thousand, seven hundred forty".