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68393037 = 3314715647
BaseRepresentation
bin1000001001110…
…01100001001101
311202200201121110
410010321201031
5120002034122
610441522233
71460221416
oct404714115
9152621543
1068393037
1135673779
121aaa3379
131122826b
14912480d
15600e90c
hex413984d

68393037 has 16 divisors (see below), whose sum is σ = 96141312. Its totient is φ = 43182960.

The previous prime is 68393021. The next prime is 68393041. The reversal of 68393037 is 73039386.

It is not a de Polignac number, because 68393037 - 24 = 68393021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68392986 and 68393004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68395037) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3453 + ... + 12194.

It is an arithmetic number, because the mean of its divisors is an integer number (6008832).

Almost surely, 268393037 is an apocalyptic number.

It is an amenable number.

68393037 is a deficient number, since it is larger than the sum of its proper divisors (27748275).

68393037 is a wasteful number, since it uses less digits than its factorization.

68393037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15728.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 68393037 is about 8270.0082829463. The cubic root of 68393037 is about 408.9503928134.

The spelling of 68393037 in words is "sixty-eight million, three hundred ninety-three thousand, thirty-seven".

Divisors: 1 3 31 47 93 141 1457 4371 15647 46941 485057 735409 1455171 2206227 22797679 68393037