257194982 has 16 divisors (see below), whose sum is σ = 443016000. Its totient is φ = 110753640.

The previous prime is 257194981. The next prime is 257194991. The reversal of 257194982 is 289491752.

It is a super-2 number, since 2×257194982² = 132298517531960648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257194981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307232 + ... + 308067.

It is an arithmetic number, because the mean of its divisors is an integer number (27688500).

Almost surely, 2^257194982 is an apocalyptic number.

257194982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

257194982 is a deficient number, since it is larger than the sum of its proper divisors (185821018).

257194982 is a wasteful number, since it uses less digits than its factorization.

257194982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615331.

The product of its digits is 362880, while the sum is 47.

The square root of 257194982 is about 16037.2997103627. The cubic root of 257194982 is about 635.9468644215.

The spelling of 257194982 in words is "two hundred fifty-seven million, one hundred ninety-four thousand, nine hundred eighty-two".