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67648372 = 22111790439
BaseRepresentation
bin1000000100000…
…11101101110100
311201021220010021
410002003231310
5114304221442
610413534524
71451000401
oct402035564
9151256107
1067648372
1135205250
121a7a4444
131102732c
148dad2a8
155e13e67
hex4083b74

67648372 has 24 divisors (see below), whose sum is σ = 136745280. Its totient is φ = 28940160.

The previous prime is 67648367. The next prime is 67648393. The reversal of 67648372 is 27384676.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 44472 + ... + 45967.

It is an arithmetic number, because the mean of its divisors is an integer number (5697720).

Almost surely, 267648372 is an apocalyptic number.

It is an amenable number.

67648372 is an abundant number, since it is smaller than the sum of its proper divisors (69096908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67648372 is a wasteful number, since it uses less digits than its factorization.

67648372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90471 (or 90469 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 67648372 is about 8224.8630383733. The cubic root of 67648372 is about 407.4607527409.

The spelling of 67648372 in words is "sixty-seven million, six hundred forty-eight thousand, three hundred seventy-two".

Divisors: 1 2 4 11 17 22 34 44 68 187 374 748 90439 180878 361756 994829 1537463 1989658 3074926 3979316 6149852 16912093 33824186 67648372