254940840 has 384 divisors, whose sum is σ = 1095793920. Its totient is φ = 49766400.

The previous prime is 254940817. The next prime is 254940871. The reversal of 254940840 is 48049452.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 254940795 and 254940804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 470970 + ... + 471510.

It is an arithmetic number, because the mean of its divisors is an integer number (2853630).

Almost surely, 2^254940840 is an apocalyptic number.

254940840 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 254940840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (547896960).

254940840 is an abundant number, since it is smaller than the sum of its proper divisors (840853080).

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

254940840 is a wasteful number, since it uses less digits than its factorization.

254940840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 254940840 is about 15966.8669437683. The cubic root of 254940840 is about 634.0835271602.

The spelling of 254940840 in words is "two hundred fifty-four million, nine hundred forty thousand, eight hundred forty".