254157240 has 32 divisors (see below), whose sum is σ = 762472080. Its totient is φ = 67775232.

The previous prime is 254157229. The next prime is 254157263. The reversal of 254157240 is 42751452.

254157240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 254157198 and 254157207.

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 7 ways as a sum of consecutive naturals, for example, 1058869 + ... + 1059108.

Almost surely, 2^254157240 is an apocalyptic number.

254157240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254157240 is an abundant number, since it is smaller than the sum of its proper divisors (508314840).

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

254157240 is a wasteful number, since it uses less digits than its factorization.

254157240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117991 (or 2117987 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 254157240 is about 15942.3097448268. The cubic root of 254157240 is about 633.4332092412.

The spelling of 254157240 in words is "two hundred fifty-four million, one hundred fifty-seven thousand, two hundred forty".