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258849412 = 22173806609
BaseRepresentation
bin11110110110110…
…11101010000100
3200001001220122021
433123123222010
51012231140122
641404012524
76262120003
oct1733335204
9601056567
10258849412
11123128438
1272831144
1341820643
1426540c3a
1517ad11c7
hexf6dba84

258849412 has 12 divisors (see below), whose sum is σ = 479632860. Its totient is φ = 121811456.

The previous prime is 258849397. The next prime is 258849431. The reversal of 258849412 is 214948852.

It can be written as a sum of positive squares in 2 ways, for example, as 173027716 + 85821696 = 13154^2 + 9264^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1903237 + ... + 1903372.

It is an arithmetic number, because the mean of its divisors is an integer number (39969405).

Almost surely, 2258849412 is an apocalyptic number.

It is an amenable number.

258849412 is a deficient number, since it is larger than the sum of its proper divisors (220783448).

258849412 is a wasteful number, since it uses less digits than its factorization.

258849412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806630 (or 3806628 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 258849412 is about 16088.7977176668. The cubic root of 258849412 is about 637.3075462636.

The spelling of 258849412 in words is "two hundred fifty-eight million, eight hundred forty-nine thousand, four hundred twelve".

Divisors: 1 2 4 17 34 68 3806609 7613218 15226436 64712353 129424706 258849412