254078649 has 24 divisors (see below), whose sum is σ = 404269632. Its totient is φ = 152485920.

The previous prime is 254078647. The next prime is 254078653. The reversal of 254078649 is 946870452.

It is a happy number.

It is not a de Polignac number, because 254078649 - 2¹ = 254078647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254078647) 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 23 ways as a sum of consecutive naturals, for example, 2262 + ... + 22655.

It is an arithmetic number, because the mean of its divisors is an integer number (16844568).

Almost surely, 2^254078649 is an apocalyptic number.

It is an amenable number.

254078649 is a deficient number, since it is larger than the sum of its proper divisors (150190983).

254078649 is a wasteful number, since it uses less digits than its factorization.

254078649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25037 (or 25034 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 254078649 is about 15939.8446981142. The cubic root of 254078649 is about 633.3679120240.

The spelling of 254078649 in words is "two hundred fifty-four million, seventy-eight thousand, six hundred forty-nine".