257147098 has 16 divisors (see below), whose sum is σ = 417263616. Its totient is φ = 118148400.

The previous prime is 257147087. The next prime is 257147131. The reversal of 257147098 is 890741752.

It is a super-4 number, since 4×257147098⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16378 + ... + 27973.

It is an arithmetic number, because the mean of its divisors is an integer number (26078976).

Almost surely, 2^257147098 is an apocalyptic number.

257147098 is a deficient number, since it is larger than the sum of its proper divisors (160116518).

257147098 is a wasteful number, since it uses less digits than its factorization.

257147098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44589.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 257147098 is about 16035.8067461541. The cubic root of 257147098 is about 635.9073955726.

The spelling of 257147098 in words is "two hundred fifty-seven million, one hundred forty-seven thousand, ninety-eight".