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258212038 = 2718443717
BaseRepresentation
bin11110110010000…
…00000011000110
3122222212112022211
433121000003012
51012100241123
641342214034
76253523530
oct1731000306
9588775284
10258212038
11122832587
127258431a
13416594b6
1426416850
1517a0740d
hexf6400c6

258212038 has 8 divisors (see below), whose sum is σ = 442649232. Its totient is φ = 110662296.

The previous prime is 258212029. The next prime is 258212047. The reversal of 258212038 is 830212852.

It is an interprime number because it is at equal distance from previous prime (258212029) and next prime (258212047).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2582120382 = 133346913136226888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9221845 + ... + 9221872.

It is an arithmetic number, because the mean of its divisors is an integer number (55331154).

Almost surely, 2258212038 is an apocalyptic number.

258212038 is a deficient number, since it is larger than the sum of its proper divisors (184437194).

258212038 is a wasteful number, since it uses less digits than its factorization.

258212038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18443726.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 258212038 is about 16068.9775032514. The cubic root of 258212038 is about 636.7840280830.

The spelling of 258212038 in words is "two hundred fifty-eight million, two hundred twelve thousand, thirty-eight".

Divisors: 1 2 7 14 18443717 36887434 129106019 258212038