254223440 has 80 divisors (see below), whose sum is σ = 632048832. Its totient is φ = 94758912.

The previous prime is 254223421. The next prime is 254223443. The reversal of 254223440 is 44322452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254223443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144647 + ... + 146393.

Almost surely, 2^254223440 is an apocalyptic number.

254223440 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 254223440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316024416).

254223440 is an abundant number, since it is smaller than the sum of its proper divisors (377825392).

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

254223440 is a wasteful number, since it uses less digits than its factorization.

254223440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884 (or 1878 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 254223440 is about 15944.3858458079. The cubic root of 254223440 is about 633.4882009702.

Adding to 254223440 its reverse (44322452), we get a palindrome (298545892).

The spelling of 254223440 in words is "two hundred fifty-four million, two hundred twenty-three thousand, four hundred forty".